CCNA Discovery v 4.1 DHomesb Final Exam &100% Answers Forms A&B&C

3122-2543 DHomesb Final Exam By Saudi Cisco

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‫النموذج‏األول‬ Exam Viewer - DHomesb Final Exam - CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)

Below you will find the assessment items as presented on the exam as well as the scoring rules associated with the item. Cisco Networking Academy content is copyrighted and the unauthorized posting, distribution or sharing of this exam content is prohibited. 1

A network engineer wants to represent confidential data in binary format. What are the two possible values that the engineer can use? (Choose two.) 0 1 2 A F

Observable

1

Max Value

Description Option 1 and Option 2 are correct. 1 point for each correct option. 0 points if more options are selected than required.

correctness of response

2

This item references content from the following areas: CCNA Discovery: Networking for Home and Small Businesses

 2

1.3.1 Representing Information Digitally Which protocol is used to transfer files among network devices and perform file-management functions? DNS FTP HTML HTTP

Observable 1


Description 2 points for Option 2 0 points for any other option

Max Value 2


 3

6.2.3 FTP Clients and Servers

Refer to the exhibit. A user on host A sends an e-mail to the user on host B. Which type of message does host A send? broadcast multicast simulcast unicast

Observable 1

Description


Max Value

2 points for Option 4 0 points for any other option

2


 4

3.2.7 Message Patterns What are two ways that a user can interact with an operating system shell? (Choose two.) CLI OS GUI NIC kernel

Observable

1



Max Value 2


 5

2.1.1 Purpose of an Operating System All hosts within a domain receive the same frame that originates from one of the devices. The domain is also bounded by routers. What type of domain is this? broadcast collision local multicast

Observable 1

Description

Max Value



2


 6

3.4.4 Broadcast Messaging Which three statements describe an IP address? (Choose three.) An IP address is known as a logical address. An IP address uses a 30-bit addressing scheme. An IP address is found in the Layer 2 header during transmission. The network portion of an IP address is burned into a network interface card. An IP address is unique within the same local network. The network portion of an IP address will be the same for all hosts that are connected to the same local network.

Observable

1

Max Value

Description Option 1, Option 5, and Option 6 are correct. 1 point for each correct option. 0 points if more options are selected than required.


3


 7

3.3.6 Logical Addressing What is a function of the distribution layer in the hierarchical design model? to provide latency free switching to organize end devices in small manageable groups to provide connectivity using the high-speed backbone to provide connectivity between smaller local networks

Observable 1


Description

Max Value


2


  8

3.3.5 Hierarchical Design of Ethernet Networks 3.3.7 Access and Distribution Layers and Devices For the TCP/IP model for internetwork communication, which statement describes the process for the transition of data from the internet layer to the network access layer? An IP packet is encapsulated in a frame. A TCP segment is placed in an IP packet. HTML data is encapsulated in a TCP segment. A frame is placed on the network media as encoded bits.

Observable 1



Max Value 2


 9

6.3.2 Protocol Operation of Sending and Receiving a Message In IP telephony, what is the purpose of a gateway to the PSTN? to connect IP voice clients to Internet phone service to create a peer-to-peer connection between two IP voice clients to map unique names of IP voice endpoints to a client list on a voice server to allow IP voice clients to communicate with regular analog telephones.

Observable 1



Max Value 2


 10

6.2.6 Voice Clients and Servers TCP/IP data transmission between the source and destination host is encapsulated in four steps: A. adds the data-link header and trailer; B. converts data to bits for transmission; C. adds the network IP address to the header of the packet; D. segments the data for end-to-end transport. What is the correct sequence of these steps? A, B, C, D A, D, B, C B, D, A, C D, C, A, B D, C, B, A

Observable 1



Max Value 2




6.3.2 Protocol Operation of Sending and Receiving a Message

11 Refer to the graphic. Based on the information that is shown, what statement is true? This configuration would be commonly found in an ad hoc wireless network. Any wireless client that is attached to this access point would have the same IP address and SSID. All wireless devices that are connected to this access point must have an assigned SSID of Academy.

In addition to accepting wireless client requests, this access point must connect to the wired network.

Observable 1


Description

Max Value


2


 12

7.2.5 Configuring the Access Point What does the term "attenuation" mean in data communication? loss of signal strength as distance increases time for a signal to reach its destination leakage of signals from one cable pair to another strengthening of a signal by a networking device

Observable 1



Max Value 2


 13

4.5.5 Cable Testing A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used? DSL dial-up satellite cell modem cable modem

Observable 1



Max Value 2


 14

4.1.4 Options for Connecting to the ISP Which of the following statements best describes DNS? DNS servers are used to map an IP address to a physical address. DNS servers are used to map a name to an IP address. DNS servers are used to configure logical address information for host computers. DNS servers are used to translate from private addresses to public addresses.

Observable 1

correctness of

Description 2 points for Option 2

Max Value 2

response

0 points for any other option


 15

6.2.1 Domain Name Service (DNS) Which network design layer provides a connection point for end user devices to the network? access core distribution network

Observable 1



Max Value 2


 16

3.4.1 Access Layer After attaching four PCs to the switch ports, configuring the SSID and setting authentication properties for a small office network, a technician successfully tests the connectivity of all PCs that are connected to the switch and WLAN. A firewall is then configured on the device prior to connecting it to the Internet. What type of network device includes all of the describ ed features? switch ISR router firewall appliance standalone wireless access point

Observable 1



Max Value 2


 17

3.6.3 Multi-function Device Which two statements are true about local applications? (Choose two.) They run on the network. An example of a local application is e-mail. They are accessed from a remote computer. They are stored on the local hard disk. They run on the computer where they are installed.

Observable

1



Max Value 2


 18

1.1.2 Local and Network Applications What are two examples of peripheral input devices? (Choose two.) external modem barcode reader digital camera plotter printer

Observable

1

Max Value



2


 19

1.4.5 Peripheral Devices A home user was successfully browsing the Internet earlier in the day but is now unable to connect. A ping command from a wireless laptop to a wired PC in the LAN is successful, but the nslookup command fails to resolve a website address. The user decides to analyze the LEDs on the Linksys router to verify connectivity. Which LED should be of main concern in this situation? WLAN LED power LED Internet LED 1-4 Ethernet LEDs

Observable 1



Max Value 2


  20

3.6.4 Connecting the Linksys Router 6.2.1 Domain Name Service (DNS) Which portion of the packet does a router use to forward the packet to the destination? source IP address user data destination IP address control information destination MAC address

Observable 1



Max Value 2




3.5.2 Function of Routers

21

Refer to the exhibit. H1 can ping H2, H3, and the Fa0/0 interface of router R1. H2 and H3 but not H1 can ping H4 and H5. What is a possible cause for the H1 failure? Router R1 has no route to the destination network. Switch S1 does not have an IP address configured. The link between router R1 and switch S2 has failed. Host H1 does not have a default gateway configured.

Observable 1

Description

Max Value

correctness of 2 points for Option 4 response 0 points for any other option

2


 22

3.5.3 Default Gateway When are leased lines typically used? when low bandwidth is required for home and small business connectivity when a dedicated digital data line is necessary as a less expensive option to cable and DSL modem service

Observable 1



Max Value 2


 23

4.1.4 Options for Connecting to the ISP A network administrator has been notified that users have experienced problems gaining access to network resources. What utility could be used to directly query a name server for information on a destination domain?

ping tracert netstat ipconfig nslookup

Observable 1



Max Value 2


 24

9.2.2 Software Utilities for Troubleshooting Connectivity Under what circumstance would it be appropriate to use private IP addresses? for communication between two ISPs for a network that is directly connected to the Internet for addresses that are used exclusively within an organization. for a host with more than one direct connection to the Internet

Observable 1



Max Value 2


 25

5.2.2 Public and Private IP Addresses After issuing the ipconfig/all command on a host that has DHCP enabled, a network administrator notes that the output contains faulty IP configuration information. What is the first step the administrator should take to resolve this issue? Replace the NIC in the host. Change the IP address of the DHCP server. Use static addressing to assign the correct IP address. Use the release and renew options supported by the ipconfig command.

Observable 1



Max Value 2


 26

9.2.3 Troubleshooting Using Ipconfig What is the default subnet mask for an IP address of 64.100.19.14? 255.0.0.0 255.255.0.0 255.255.255.0

255.255.255.255

Observable 1



Max Value 2


 27

5.2.1 IP Address Classes and Default Subnet Masks Which three address ranges can be used to depict private IP addresses? (Choose three.) 10.0.0.0 to 10.0.0.255 127.16.0.0 to 127.16.255.255 150.150.0.0 to 150.150.255.255 172.16.1.0 to 172.16.1.255 192.168.22.0 to 192.168.22.255 200.100.50.0 to 200.100.50.255

Observable

1

Max Value

Description Option 1, Option 4, and Option 5 are correct. 1 point for each correct option. 0 points if more options are selected than required.


3


 28

5.2.2 Public and Private IP Addresses For an IP address, what component decides the number of bits that is used to represent the host ID? default-gateway host number network number subnet mask

Observable 1



Max Value 2


 29

5.1.4 How IP Addresses and Subnet Masks Interact What is the purpose of pop-up blocker software? It detects and removes spyware. It detects and removes viruses. It prevents the display of advertisement windows. It removes unwanted e-mail.

Observable 1



Max Value 2


 30

8.3.1 Common Security Measures What is a service pack? an access policy an agreement between a company and a vendor a piece of code created to fix one specific problem a collection of patches and updates released by a vendor a small piece of software designed specifically for security issues

Observable 1



Max Value 2




8.3.2 Updates and Patches

31

Refer to the exhibit. The security policy of an organization allows employees to connect to the office intranet from their homes. Which type of security policy is this? acceptable use incident handling network maintenance remote access

Observable 1






8.3.1 Common Security Measures

Max Value 2

32

What is the purpose of creating a DMZ during network firewall implementation? to create a server security zone accessible only to internal clients to create a dirty zone that allows all inbound and outbound traffic to allow for a publicly accessible zone without compromising the internal network to specify a higher security level than normally required for the internal production network

Observable 1



Max Value 2


 33

8.4.2 Using a Firewall Which statement is true concerning stateful packet inspection? Access is permitted based on IP addresses of the source and destination devices. Access is permitted based on the MAC addresses of the source and destination devices. Access is permitted only if the type of application that is attempting to reach the internal host is allowed. Access is permitted only if it is a legitimate response to a request from an internal host.

Observable 1



Max Value 2




8.4.1 What is a Firewall?

34

Refer to the exhibit. An educational institution needs to connect PC systems that use private IP addressing to the Internet. They have multiple systems that need to access the Internet, but were only able to purchase one public IP address. What should be activated on the Linksys integrated router to achieve this goal? authentication DHCP encryption firewall NAT

WEP

Observable 1

Description


Max Value


2


 35

5.4.3 Network Address Translation Which adapter card would be required for a PC to exchange information with other PCs on a LAN? NIC video card sound card internal modem

Observable 1



Max Value 2


 36

1.4.3 Adapter Cards What type of computer would most likely use a docking station? laptop server desktop mainframe workstation

Observable 1



Max Value 2


 37

1.2.3 Portable Devices What two commands can be used to form a new binding if client information does not agree with the DHCP client table? (Choose two.) ipconfig /release ipconfig /all ipconfig /flushdns ipconfig /renew ipconfig

Observable

Description

Max Value

1

Option 1 and Option 4 are correct. 1 point for each correct option. 0 points if more options are selected than required.


2


  38

9.2.3 Troubleshooting Using Ipconfig 9.3.6 DHCP Issues Some new features are available for the OS that is currently running on a user's PC. What method should be cho sen so that the user can install these new feature sets? clean install multi-boot upgrade virtualization

Observable 1

Description

Max Value



2


 39

2.2.1 OS Installation Methods What is true about a wireless access point that is equipped with an omnidirectional antenna? concentrates signal in one direction typically used in bridging applications radiates the signal equally in all directions provides the greatest transmission distance of all antenna types that are used by APs

Observable 1



Max Value 2


 40

7.2.2 Wireless LAN Components Which device is often configured to act as both a DHCP client and a DHCP server? home PC ISP modem wireless-enabled laptop integrated services router

Observable 1



Max Value 2


 41

5.3.2 DHCP Servers A local PC has the correct configuration that is required to access the network. A ping command that is sourced at the PC does not receive a response from a remote device. Which operating system command might be used to determine where the connection failed? netstat tracert ipconfig nslookup

Observable 1



Max Value 2


 42

9.2.5 Troubleshooting Using Tracert What type of cable would be required to connect a Linksys router to a wired PC? crossover cable rollover cable serial cable straight-through cable

Observable 1



Max Value 2


  43

3.6.4 Connecting the Linksys Router 7.2.5 Configuring the Access Point What data communication technology uses low-power radio waves to transmit data? copper cable fiber optic cable wireless radio

Observable 1



Max Value 2


 44

1.3.3 Measuring Speed, Resolution and Frequency How does a straight-through cable connect two unlike devices? It connects the receive pins on the first device to the receive pins on the second device. It connects the transmit pins on the first device to the receive pins on the second device. It disconnects the transmit pins and uses only the receive pins. It uses the same pins for transmitting and receiving.

Observable 1



Max Value 2


 45

4.5.2 UTP Cables When terminating a UTP cable, why is it important to push the wires all the way into the end of the connector? to allow the cable to endure more stretching or twisting to ensure good electrical contact to ensure that the wires are in correct order to minimize crosstalk

Observable 1



Max Value 2


 46

4.5.3 UTP Cable Termination Which two components are configured via software in order for a PC to participate in a network environment? (Choose two.) MAC address IP address kernel shell subnet mask

Observable

1



Max Value 2


 47

2.2.3 Configuring a Computer for the Network A college network administrator is planning a wireless LAN to provide service in the student lounge and outdoor patio. The

requirements include a range of at least 80 meters and a speed of 30 Mb/s. Which wireless LAN standard meets these requirements? 802.11 802.11a 802.11b 802.11g

Observable 1



Max Value 2


 48

7.2.1 Wireless LAN Standards Which two causes of networking problems are related to the physical layer? (Choose two.) damaged cables and connectors incorrect addressing incorrect subnet mask overheated components incorrect default gateway

Observable

1

Max Value



2


 49

9.2.1 Detecting Physical Problems Because of an increasing number of users, bandwidth per user on a WLAN has decreased to a point where users are complaining about poor performance. What can be done to improve the user experience? Increase the AP radio signal strength. Place the AP in a more central location. Deploy an external omni-directional antenna. Reduce the number of devices using each channel.

Observable 1



Max Value 2


 50

9.3.4 Troubleshooting Radio Problems in a WLAN A network technician suspects that malware on a user PC is opening multiple TCP connections to a specific foreign host address. Which Windows command line utility can be used to confirm the multiple TCP connections? ping

netstat tracert ipconfig nslookup

Observable 1



Max Value 2




9.2.6 Troubleshooting Using Netstat

‫النموذج‏الثاني‬ Exam Viewer - DHomesb Final Exam - CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)


A network engineer wants to represent confidential data in binary format. What are the two possible values that the engineer can use? (Choose two.) 0 1 2 A F

Observable

1

Max Value



2


 2


Observable 1



Max Value 2


 3

6.2.3 FTP Clients and Servers A network administrator wishes to deploy a small network without using static IP addresses on employee workstations. However, all employees need Internet access. Which two of these services must be configured to meet network requirements? (Choose two.) FTP DHCP HTTPS NAT

HTTP

Observable

1

Max Value



2


  4

5.3.1 Static and Dynamic Address Assignment 6.2.1 Domain Name Service (DNS) What are two characteristics of a MAC address? (Choose two.) It indicates the physical location of the host within the network. It is dynamically assigned by a DHCP server. It is displayed in HEX characters. It is a physical address. It is cable-based.

Observable

1

Max Value



2


 5

3.3.3 Physical Addressing What measurement is commonly used to describe communication speed when transferring data? bps cps Hz MB

Observable 1



Max Value 2


 6

1.3.3 Measuring Speed, Resolution and Frequency Which term is associated with logical addressing? IP addresses port addresses physical addresses Media Access Control addresses

Observable 1



Max Value 2


 7

3.3.6 Logical Addressing What type of message is sent to a specific group of hosts? static unicast dynamic multicast broadcast

Observable 1



Max Value 2


 8

3.2.7 Message Patterns TCP/IP data transmission between the source and destination host is de-encapsulated in four steps: A. The TCP header is removed. B. Bits are decoded and the destination MAC address is recognized. C. The IP header is removed and the contents are passed to the next layer. D. The Ethernet header and trailer are removed. What is the correct sequence of these steps? A, B, C, D A, C, B, D B, C, D, A B, D, C, A C, A, B, D

Observable 1



Max Value 2


 9

6.3.2 Protocol Operation of Sending and Receiving a Message

Refer to the exhibit. How many additional hosts can be added to the local netw ork? 124 126 252 254 255 256

Observable 1


Description

Max Value


2


 10

5.1.4 How IP Addresses and Subnet Masks Interact Which of the following are transport layer protocols of the TCP/IP model? (Choose two.) FTP UDP SMTP TFTP TCP

Observable

1




 11

6.1.3 TCP and UDP Transport Protocols

Max Value 2

Refer to the graphic. Assume that the command output is from a wireless DHCP client that is connected to a Linksys integrated router. What can be deduced from the output? The wireless connection is good. The WEP key or SSID needs to be checked. The DHCP configuration on the router needs to be checked. The wireless NIC driver or the NIC itself needs to be reinstalled.

Observable 1

Description

Max Value



2


  12

9.2.2 Software Utilities for Troubleshooting Connectivity 9.2.4 Troubleshooting Using Ping What is an advantage of purchasing a custom-built computer? It is beneficial for less knowledgeable consumers. The waiting period for assembly is negligible. The cost is lower compared to a computer that has been preassembled. The user can specify high-performance components to meet specific needs.

Observable 1



Max Value 2


 13

1.4.1 Computer System Which type of network supports DHCP and DNS services for network users in a network domain? client/server peer-to-peer hierarchical ad hoc

Observable 1

correctness of


Max Value 2

response



 14

3.1.5 Peer-to-Peer Networks A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. Wh at ISP connection type should be used? DSL dial-up satellite cell modem cable modem

Observable 1



Max Value 2


 15

4.1.4 Options for Connecting to the ISP Which of the following statements best describes DNS? DNS servers are used to map an IP address to a physical address. DNS servers are used to map a name to an IP address. DNS servers are used to configure logical address information for host computers. DNS servers are used to translate from private addresses to public addresses.

Observable 1



Max Value 2


 16

6.2.1 Domain Name Service (DNS) Which two statements are true about local applications? (Choose two.) They run on the network. An example of a local application is e-mail. They are accessed from a remote computer. They are stored on the local hard disk. They run on the computer where they are installed.

Observable

1



Max Value 2


 17

1.1.2 Local and Network Applications What are two examples of peripheral input devices? (Choose two.) external modem barcode reader digital camera plotter printer

Observable

1

Max Value



2


 18

1.4.5 Peripheral Devices Which statement accurately describes what network devices do in the distribution layer of the three layer design model? They interconnect individual hosts. They interconnect multiple companies. They interconnect local network segments. They interconnect the company network to the ISP.

Observable 1



Max Value 2


 19

3.5.1 Distribution Layer A network designer is working with a small company to determine the network type best suited to the needs of the company. Which two characteristics could the designer use to describe a peer-to-peer network to the owner of the company? (Choose two.) central administration easy to install low cost scalable secure

Observable

1



Max Value 2




3.1.5 Peer-to-Peer Networks

20

Refer to the exhibit. PC1 sends a data packet to PC4. When the router forwards the data out Fa0/1, what destination MAC address will the router place in the frame? 0050.0FA9.CB47 0050.E208.A761 0200.5455.4E01 0200.545D.25F7

1

Observable

Description



Max Value 2


 21

3.5.4 Tables Maintained by Routers What information within a data packet does a router use, by default, to make forwarding decisions? the destination MAC address the destination IP address the destination host name the destination service requested

Observable 1



Max Value 2


 22

3.5.2 Function of Routers Using both an IP address and name, a network technician successfully pings a remote server. However, all attempts to access a resource on the server fail. What is a possible cause for this failure? The server is off line. The DNS server is down.

The requested service is not running. A route to the server has not been established.

Observable 1



Max Value 2


 23

9.2.4 Troubleshooting Using Ping During the process of establishing communications between two hosts, what occurs after a switch finds the destination MAC address in its MAC address table? A permanent circuit is established between the source and destination ports. The switch builds a temporary connection between the source and destination ports. The switch maps the destination MAC address to a destination IP address before forwarding the frame. All hosts that are attached to the switch will receive the messages that are passed between the source and destination ports.

Observable 1



Max Value 2


 24

3.4.3 Function of Switches What describes the external IP address that is obtained by a router through a cable or DSL modem? a public address that is obtained from ICANN a private address that is manually configured by the administrator a public address that is obtained through DHCP from the ISP a private address that converts to a public address on the internal LAN

Observable 1



Max Value 2


 25

5.4.2 Address Assignment Under what circumstance would it be appropriate to use private IP addresses? for communication between two ISPs for a network that is directly connected to the Internet for addresses that are used exclusively within an organization. for a host with more than one direct connection to the Internet

Observable

Description

Max

Value 1



2


 26

5.2.2 Public and Private IP Addresses Which two values represent the network number and default mask for the address 209.165.200.225? (Choose two.) 209.0.0.0 209.165.0.0 209.165.200.0 255.0.0.0 255.255.0.0 255.255.255.0

Observable

1

Max Value



2


 27

5.2.1 IP Address Classes and Default Subnet Masks What portion of the destination IP address is used as a packet is routed through the Internet? subnet mask host portion network portion default gateway address

Observable 1



Max Value 2


 28

5.2.3 Unicast, Broadcast and Multicast Addresses Which three addresses belong to the category of private IP addresses? (Choose three.) 10.0.0.1 128.0.0.1 150.0.0.1 172.16.0.1 192.168.31.19 172.168.31.1

Observable

Description

Max

Value

1

Option 1, Option 4, and Option 5 are correct. 1 point for each correct option. 0 points if more options are selected than required.


3


 29

5.2.2 Public and Private IP Addresses What is a service pack? an access policy an agreement between a company and a vendor a piece of code created to fix one specific problem a collection of patches and updates released by a vendor a small piece of software designed specifically for security issues

Observable 1



Max Value 2


 30

8.3.2 Updates and Patches Which wireless protocol is used for encryption? EAP Open PSK WEP

Observable 1



Max Value 2


 31

7.3.4 Encryption on a WLAN


Observable 1


Description

Max Value


2





32

Refer to the exhibit. An educational institution needs to connect PC systems that use private IP addressing to the Internet. They have multiple systems that need to access the Internet, but were only able to purchase one public IP address. What should be activated on the Linksys integrated router to achieve this goal? authentication DHCP encryption firewall NAT WEP

Observable 1



Max Value 2


 33

5.4.3 Network Address Translation Which statement is true about packet filtering? It recognizes and filters specific types of attacks. It permits access based on IP address. It is performed from a host network device. It translates an internal address or group of addresses into a public address that is sent across the network.

Observable 1



Max Value 2


 34

8.4.1 What is a Firewall? Which wireless authentication method uses the same key for the AP and the client? EAP Open PSK WEP

Observable 1



Max Value 2


 35

7.3.3 Authentication on a WLAN Which adapter card would be required for a PC to exchange information with other PCs on a LAN? NIC video card sound card internal modem

Observable 1



Max Value 2


 36

1.4.3 Adapter Cards Which type of computer has an integrated mouse?

desktop laptop mainframe server pocket PC

Observable 1



Max Value 2


 37

1.2.3 Portable Devices What component of a personal computer is responsible for the processing of all data? RAM CPU firewall system bus operating system

Observable 1



Max Value 2


 38

1.4.2 Motherboard, CPU, and RAM What must be identical on all devices in a WLAN for successful wireless communication between the devices? SSID antenna type network mode wireless NIC driver

Observable 1



Max Value 2


 39

7.2.3 WLANs and the SSID Some new features are available for the OS that is currently running on a user's PC. What method should be chosen so that the user can install these new feature sets? clean install multi-boot

upgrade virtualization

Observable 1



Max Value 2


 40

2.2.1 OS Installation Methods How does a crossover cable connect two routers? It connects the pins that are used for receiving on one router to the pins that are used for receiving on the other router. It connects the pins that are used for transmitting on one router to the pins that are used for receiving on the other router. It disconnects the transmit pins and uses only the receive pins. It uses the same pins for transmitting and receiving.

Observable 1



Max Value 2


 41

4.5.2 UTP Cables A local PC has the correct configuration that is required to access the network. A ping command that is sourced at the PC does not receive a response from a remote device. Which operating system command might be used to determine where the connection failed? netstat tracert ipconfig nslookup

Observable 1



Max Value 2


 42

9.2.5 Troubleshooting Using Tracert What is the name for the contract between a customer and an ISP that specifies requirements for uptime and service response time? DSL IAB NAP SLA

Observable 1



Max Value 2


 43

4.1.5 ISP Levels of Service What is the purpose of the ipconfig /release command? It forces a client to give up its current IP address. It forces a client to give up its current MAC address. It forces the client to clear all the MAC address to IP address associations it has learned. It shows the current IP configuration on the client.

Observable 1



Max Value 2




9.3.6 DHCP Issues

44

Refer to the exhibit. Which statement is true based on the configuration shown? Multiple modes of encryption are configured on this device. Both 802.11b and 802.11g hosts can connect to this device. All APs in the WLAN will allow wireless connections via channel 6. The network name must be entered on a host computer before the host connects to this network.

Observable 1



Max Value 2


 45

7.2.5 Configuring the Access Point What is an advantage of selecting an operating system that has a GPL license over one with a commercial license?

The GPL license-based operating system ensures that everyone can participate in the enhancement of the product. The GPL license-based operating system implements a structured development life cycle. The GPL license-based operating system prevents modification of the source code. The GPL license-based operating system provides structured support.

Observable 1



Max Value 2


 46

2.1.2 Operating System Requirements A college network administrator is planning a wireless LAN to provide service in the student lounge and outdoor patio. The requirements include a range of at least 80 meters and a speed of 30 Mb/s. Which wireless LAN standard meets these requirements? 802.11 802.11a 802.11b 802.11g

Observable 1



Max Value 2




7.2.1 Wireless LAN Standards

47

Refer to the exhibit. A ping command that was initiated from the local PC to the file server at IP address 209.165.201.5 succeeded. However, a ping that was initiated from the file server to the local PC was unsuccessful. What could cause the ping command that was initiated from file server to fail? The file server is down. The integrated router has failed. NAT has been enabled on the integrated router.

A security measure is blocking access that initiates from the server. The DSL modem failed to provide an IP address for the local PC.

Observable 1

Description

Max Value

correctness of 2 points for Option 4 response 0 points for any other option

2


 48

9.3.7 Troubleshooting the ISR to ISP Connection What two pieces of information should a help desk technician document while troubleshooting connectivity issues with an end user? (Choose two.) the CPU clock speed of the computer the number of network jacks that are in the room if the user can ping the default gateway address if the word processing software is installed correctly whether the PC uses dynamic or static IP addressing

Observable

1



Max Value 2


 49

9.4.3 Using the Helpdesk Which two causes of networking problems are related to the physical layer? (Choose two.) disconnected cables improper operation of cooling fans incorrect MAC address incorrect default gateway incorrect subnet mask

Observable

1



Max Value 2


 50

9.2.1 Detecting Physical Problems A user has reported a failure to connect to the network. Based on similar calls from other users in the same location, the network technician starts troubleshooting by entering the ipconfig command on the user computer. Which troubleshooting technique is the technician using? top-down bottom-up substitution

divide-and-conquer

Observable 1



Max Value 2




9.1.3 Approaches to Troubleshooting

‫النموذج‏الثالث‬ Exam Viewer - DHomesb Final Exam - CCNA Discovery: Networking for Home and Small Businesses (Version 4.0)


As an assignment, a computer science student needs to present data in binary format. What are the two possible values that the student can use? (Choose two.) 0 1 2 A F

Observable

1

Max Value



2


 2


Observable 1



Max Value 2


 3

6.2.3 FTP Clients and Servers A computer joins the network and announces itself to all hosts on the LAN. What type of message does the computer send out? broadcast simulcast multicast unicast

Observable 1



Max Value 2


 4

3.2.7 Message Patterns Which term is associated with logical addressing? IP addresses port addresses physical addresses Media Access Control addresses

Observable 1



Max Value 2


 5

3.3.6 Logical Addressing Which two transport layer protocols enable hosts to communicate and transfer data? (Choose two.) DHCP ICMP IP TCP UDP

Observable

1

Max Value



2


 6

6.1.3 TCP and UDP Transport Protocols Which protocol in its default configuration downloads e-mail messages to the client computer and deletes them from the server? FTP POP3 SMTP IMAP4

Observable

Description

Max Value

1



2


 7

6.2.4 Email Clients and Servers Which two automatic addressing assignments are supported by DHCP? (Choose two.) local server address subnet mask default gateway address physical address of the recipient physical address of the sender

Observable

1

Max Value



2


 8

5.3.1 Static and Dynamic Address Assignment What are two characteristics of a MAC address? (Choose two.) It indicates the physical location of the host within the network. It is dynamically assigned by a DHCP server. It is displayed in HEX characters. It is a physical address. It is cable-based.

Observable

1

Max Value



2


 9

3.3.3 Physical Addressing What is the function of the DNS server? It assigns IP addresses to clients. It accepts HTTP requests from clients. It maps a hostname to a corresponding IP address. It manages the domain that clients are assigned to.

Observable 1



Max Value 2


 10

6.2.1 Domain Name Service (DNS) What destination port number would be used if a client wished to establish a secure connection to a web server? 21 53 80 443

Observable 1



Max Value 2


 11

6.2.2 Web Clients and Servers What does the term "attenuation" mean in data communication? loss of signal strength as distance increases time for a signal to reach its destination leakage of signals from one cable pair to another strengthening of a signal by a networking device

Observable 1



Max Value 2


 12

4.5.5 Cable Testing Which type of network supports DHCP and DNS services for network users in a network domain? client/server peer-to-peer hierarchical ad hoc

Observable 1



Max Value 2


 13

3.1.5 Peer-to-Peer Networks What are two examples of peripheral input devices? (Choose two.)

external modem barcode reader digital camera plotter printer

Observable

1



Max Value 2




1.4.5 Peripheral Devices

14

Refer to the exhibit. If H4 sends a message to H1 and the destination MAC address is in the MAC table for both Switch1 and Switch2, which host devices will receive the message? only H1 hosts H1 and H4 all hosts that are connected to Switch1 all hosts that are connected to Switch1 and Switch2

Observable 1



Max Value 2


 15

3.4.3 Function of Switches A network designer is working with a small company to determine the network type best suited to the needs of the company. Which two characteristics could the designer use to describe a peer-to-peer network to the owner of the company? (Choose two.) central administration easy to install low cost

scalable secure

Observable

1

Max Value



2


 16

3.1.5 Peer-to-Peer Networks What statement describes the filtering of traffic via the use of Stateful Packet Inspection? It recognizes and filters predefined URLs It permits access that is based on the application. It permits access based on IP or MAC addresses. It permits incoming packets that are legitimate responses to requests from internal hosts. It translates an internal address or group of addresses into a public address that is sent across the network.

Observable 1



Max Value 2


 17

8.4.1 What is a Firewall? Which two statements are true about network applications? (Choose two.) Microsoft Word is an example of a network application. Network applications are accessible from a remote computer. Network applications are installed on a special type of computer that supports only network applications. Network applications are installed on a network server. Network applications are accessible by one computer at a time.

Observable

1



Max Value 2


 18

1.1.2 Local and Network Applications Which network entity would most likely be configured as both a DHCP client and a DHCP server? ISP desktop PC wireless laptop

PC-based server integrated services home router

Observable 1



Max Value 2


 19

5.3.2 DHCP Servers What is one purpose of using logical addresses in an IP network? They identify a specific NIC on a host device by assigning a permanent logical address. They are used to determine which host device accepts the frame. They provide vendor-specific information about the host. They are used to determine the network that the host is located on. They are used by switches to make forwarding decisions.

Observable 1



Max Value 2


 20

3.3.6 Logical Addressing A network technician is required to provide access to the Internet for a large company. What is needed to accomplish this task? ISP private IP addresses for each host static IP addresses for each host DHCP server

Observable 1



Max Value 2


 21

4.1.2 Internet Service Providers (ISPs)

Refer to the exhibit. A new switch is connected to an existing switch that has a fully populated MAC table. PC1 requires the destination MAC address of PC3 in order to send a message. Which device or devices will see the ARP sent by PC1? only PC3 PC2 and PC3 PC3 and PC4 PC2, PC3 and PC4

Observable 1


Description

Max Value


2


 22

3.4.3 Function of Switches What is one function of network devices in the distribution layer of a hierarchical network design? They control the traffic between independent local networks. They control the traffic between individual hosts. They control the traffic between multiple companies. They switch data packets as fast as possible.

Observable 1



Max Value 2


 23

3.5.1 Distribution Layer What are two advantages of purchasing a custom-built computer? (Choose two.) usually a lower cost no waiting period for assembly user can specify higher performance components supports higher-end graphics and gaming applications fewer components to replace

Observable 1

correctness of

Description Option 3 and Option 4 are correct.

Max Value 2

response

1 point for each correct option. 0 points if more options are selected than required.


 24

1.4.1 Computer System What is the default subnet mask for the IP address 128.107.23.10? 255.0.0.0 255.255.0.0 255.255.255.0 255.255.255.255

Observable 1



Max Value 2


 25

5.2.1 IP Address Classes and Default Subnet Masks Under what circumstance would it be appropriate to use private IP addresses? for communication between two ISPs for a network that is directly connected to the Internet for addresses that are used exclusively within an organization. for a host with more than one direct connection to the Internet

Observable 1



Max Value 2


 26

5.2.2 Public and Private IP Addresses After issuing the ipconfig/all command on a host that has DHCP enabled, a network administrator notes that the output contains faulty IP configuration information. What is the first step the administrator should take to resolve this issue? Replace the NIC in the host. Change the IP address of the DHCP server. Use static addressing to assign the correct IP address. Use the release and renew options supported by the ipconfig command.

Observable 1



Max Value 2


 27

9.2.3 Troubleshooting Using Ipconfig Which two values represent the network number and default mask for the address 209.165.200.225? (Choose two.) 209.0.0.0 209.165.0.0 209.165.200.0 255.0.0.0 255.255.0.0 255.255.255.0

Observable

1

Max Value



2


 28

5.2.1 IP Address Classes and Default Subnet Masks How do ISPs obtain public IP addresses? They create the addresses themselves. They obtain the addresses from the home PCs. They obtain the addresses from the Internet registry. They obtain the addresses from the RFC.

Observable 1



Max Value 2


 29

4.2.1 Importance of the Internet Protocol (IP) What is the purpose of pop-up blocker software? It detects and removes spyware. It detects and removes viruses. It prevents the display of advertisement windows. It removes unwanted e-mail.

Observable 1



Max Value 2





30


Observable 1


Description

Max Value


2





31

Refer to the exhibit. An educational institution needs to connect PC systems that use private IP addressing to the Internet. They have multiple systems that need to access the Internet, but were only able to purchase one public IP address. What should be activated on the Linksys integrated router to achieve this goal? authentication DHCP encryption firewall NAT WEP

Observable 1



Max Value 2


 32

5.4.3 Network Address Translation What wireless technology has the ability to communicate with many devices at the same time, makes use of the 2.4 GHz band, and is limited to low-speed, short-range communications? RF ISM infrared Bluetooth

Observable 1



Max Value 2


 33

7.1.1 Wireless Technologies and Devices What is the purpose of creating a DMZ during network firewall implementation? to create a server security zone accessible only to internal clients to create a dirty zone that allows all inbound and outbound traffic to allow for a publicly accessible zone without compromising the internal network to specify a higher security level than normally required for the internal production network

Observable 1



Max Value 2




8.4.2 Using a Firewall

34

Refer to the exhibit. A PC is requesting a web page from a server on the Internet through a router running NAT. What combination of destination IP address and destination port number will the web server use when replying to this request? 64.100.15.2, 38459 64.100.15.2, 49159 172.16.4.6, 38459 172.16.4.6, 49159

Observable 1

correctness of


Max Value 2

response



 35

5.4.3 Network Address Translation Which adapter card would be required for a PC to exchange information with other PCs on a LAN? NIC video card sound card internal modem

Observable 1



Max Value 2


 36

1.4.3 Adapter Cards What component of a personal computer is responsible for the processing of all data? RAM CPU firewall system bus operating system

Observable 1



Max Value 2


 37

1.4.2 Motherboard, CPU, and RAM What type of computer would most likely use a docking station? laptop server desktop mainframe workstation

Observable 1



Max Value 2


 38

1.2.3 Portable Devices What two commands can be used to form a new binding if client information does not agree with the DHCP client table? (Choose two.) ipconfig /release ipconfig /all ipconfig /flushdns ipconfig /renew ipconfig

Observable

1

Max Value



2


 

9.2.3 Troubleshooting Using Ipconfig 9.3.6 DHCP Issues

39

Refer to the exhibit. Assume that the exhibited output is from a host that is connected to a Linksys integrated router. What is the first thing that should be checked if using a bottom-up troubleshooting approach? the default gateway on the host the IP address on the host the IP address on the router the link status LED on the front of the router the subnet mask on the host

Observable 1



Max Value 2


 40

9.3.6 DHCP Issues How does a crossover cable make it possible for two "like devices" (for example, two switches) to communicate? The transmit pins are disconnected and only the receive pins are used. The transmit pins on one device are connected to the transmit pins on the other device.

The receive pins on one device are connected to the receive pins on the other device. The transmit pins on one device are connected to the receive pins on the other device.

Observable 1

Description

Max Value



2


 41

4.5.2 UTP Cables What is true about a wireless access point that is equipped with an omnidirectional antenna? concentrates signal in one direction typically used in bridging applications radiates the signal equally in all directions provides the greatest transmission distance of all antenna types that are used by APs

Observable 1



Max Value 2




7.2.2 Wireless LAN Components

42

Refer to the graphic. What is the purpose of assigning a Network Name of Academy? It identifies the wireless LAN. It translates IP addresses into easy-to-remember domain names. It encrypts data between the wireless client and the access point. It allows access to the AP configuration GUI by name rather than address. It translates an internal address or group of addresses into an outside, public address.

Observable 1



Max Value 2


 43

7.2.5 Configuring the Access Point For devices that do not autosense, which connection requires a crossover cable?

hub port to router port PC to hub port PC to switch port PC port to PC port

Observable 1



Max Value 2


 44

4.5.2 UTP Cables The area covered by a single AP is known as what? ad-hoc network basic service set independent basic service set extended service set distribution system

Observable 1



Max Value 2




7.2.3 WLANs and the SSID

45

Refer to the exhibit. A small office uses an ISR to provide connectivity for both wired and wireless computers. One day, a sales person who is using a laptop cannot connect to Server1 through the wireless network. A network technician attempts to determine if the problem is on the wireless or the wired network. The technician pings successfully from the wireless laptop to the def ault gateway IP address on the ISR. What should be the next troubleshooting step? Ping from the laptop to PC1.

Ping from Server1 to PC1. Ping from Server1 to its gateway IP address. Ping from the laptop to the Ethernet port on the cable modem.

Observable 1

Description


Max Value


2




9.3.1 Connectivity Issues

46

Refer to the exhibit. What is the effect of setting the security mode to WEP on the Linksys integrated router? WEP identifies the wireless LAN. WEP allows the access point to inform clients of its presence. WEP translates IP addresses into easy-to-remember domain names. WEP encrypts data between the wireless client and the access point. WEP ensures that only authenticated users are allowed access to the WLAN. WEP translates an internal address or group of addresses into an outside, public address.

Observable 1


Description

Max Value


2


 47

7.3.4 Encryption on a WLAN Which two IP configuration components does the computer use to identify its subnetwork? (Choose two.) default gateway IP address MAC address DNS server address subnet mask

Observable

1




Max Value 2

 48

2.2.3 Configuring a Computer for the Network What two pieces of information should a help desk technician document while troubleshooting connectivity issues with an end user? (Choose two.) the CPU clock speed of the computer the number of network jacks that are in the room if the user can ping the default gateway address if the word processing software is installed correctly whether the PC uses dynamic or static IP addressing

Observable

1

Max Value



2


 49

9.4.3 Using the Helpdesk Because of an increasing number of users, bandwidth per user on a WLAN has decreased to a point where users are complaining about poor performance. What can be done to improve the user experience? Increase the AP radio signal strength. Place the AP in a more central location. Deploy an external omni-directional antenna. Reduce the number of devices using each channel.

Observable 1



Max Value 2


 50

9.3.4 Troubleshooting Radio Problems in a WLAN A user in a small office is unable to connect to the Internet. The user examines the physical connections to the ISR, a Linksys WRT300N, and notices a solid green LED on the port that is wired to the computer. What does the LED indicate about the current state of the port? The ISR is making adjustments to the port. The device is plugged in and traffic is flowing. The computer is plugged in but no traffic is flowing. The ISR does not detect that the computer is plugged in.

Observable 1



Max Value 2




9.3.2 LED Indicators

CCNA Discovery v 4.1 DHomesb Final Exam &100% Answers Forms A&B&C

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