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Networking Questions And Answers Sample Test 5

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Networking Test 5

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Total Questions:2
Attended Questions:2
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1. What command is used to create a backup configuration?


The command to back up the configuration on a router is copy running-config startup-config.

2. What is the frequency range of the IEEE 802.11a standard?


The IEEE 802.11a standard runs in the 5GHz RF range.

3. How many non-overlapping channels are available with 802.11a?


The IEEE 802.11a standard provides up to 12 non-overlapping channels.

You need to allow one host to be permitted to attach dynamically to each switch interface. Which two commands must you configure on your catalyst switch to meet this policy?

Switch(config-if)# ip access-group 10
Switch(config-if)# switchport port-security maximum 1
Switch(config)# access-list 10 permit ip host 1
Switch(config-if)# switchport port-security violation shutdown
Switch(config)# mac-address-table secure


The switchport port-security is an important command, and it's super easy with the CNA; however, from the CLI, you can set the maximum number of MAC addresses allowed into the port, and then set the penalty if this maximum has been passed.

5. Which command loads a new version of the Cisco IOS into a router?


The command copy tftp flash will allow you to copy a new IOS into flash memory on your router.

6. What VTP mode allows you to change VLAN information on the switch?


Only in server mode can you change VTP information on a switch.

7. What is the maximum distance with maximum data rate for 802.11b?


The IEEE 802.11b standard provides a maximum data rate of up to only 11Mbps, and you can be around 150 feet, maybe farther, depending on conditions.

8. A switch has been configured for three different VLANs: VLAN2, VLAN3, and VLAN4. A router has been added to provide communication between the VLANs. What type of interface is necessary on the router if only one connection is to be made between the router and the switch?


Although you can use either 100Mbps or 1Gbps Ethernet, the 100Mbps is necessary at a minimum and is the best answer to this question. You need to trunk the link from the switch to the router to make this connection work with inter-VLAN communication.

9. What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the subnet mask?


A /27 ( is 3 bits on and 5 bits off. This provides 8 subnets, each with 30 hosts. Does it matter if this mask is used with a Class A, B, or C network address? Not at all. The number of host bits would never change.

Your switch has a port status LED that is alternating between green and amber. What could this indicate?


When you connect to a switch port, at first the link lights are orange/amber, and then they turn green, indicating normal operation. If the link light is blinking, you have a problem.

If you want to have more than one Telnet session open at the same time, what keystroke combination would you use?


To keep open one or more Telnet sessions, use the Ctrl+Shift+6 and then X keystroke combination.

12. Which command will show you all the translations active on your router?


The command show ip nat translations will show you the translation table containing all the active NAT entries.

13.      Which of the following is true regarding RIPv2?


RIPv2 is pretty much just like RIPv1. It has the same administrative distance and timers and is configured just like RIPv1.

14. You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?


You need 5 subnets, each with at least 16 hosts. The mask provides 16 subnets with 14 hosts-this will not work. The mask provides 8 subnets, each with 30 hosts. This is the best answer.

15. Routers operate at layer _____. LAN switches operate at layer _____. Ethernet hubs operate at layer _____. Word processing operates at layer _____.


Routers operate at layer 3. LAN switches operate at layer 2. Ethernet hubs operate at layer 1. Word processing applications communicate to the Application layer interface, but do not operate at layer 7, so the answer would be none.

16.   How long is an IPv6 address


An IPv6 address is 128 bits long.

17. Which of the following allows a router to respond to an ARP request that is intended for a remote host?


Proxy ARP can help machines on a subnet reach remote subnets without configuring routing or a default gateway.

18. Which command displays the configuration register setting?


The show version command provides you with the current configuration register setting.

Which of the following provide inter-switch VLAN communication?



ISL is a Cisco-proprietary frame-tagging method. IEEE 802.1Q is the nonproprietary version of frame tagging.

20. Which of the following is true when describing a link-local address?


Link-local addresses are meant for throwing together a temporary LAN for meetings or a small LAN that is not going to be routed but needs to share and access files and services locally.

If you use either Telnet or FTP, which is the highest layer you are using to transmit data?


Both FTP and Telnet use TCP at the Transport layer; however, they both are Application layer protocols, so the Application layer is the best answer.

22.   Which protocol does DHCP use at the Transport layer


User Datagram Protocol is a connection network service at the Transport layer, and DHCP uses this connectionless service.

What information is displayed by the show hosts command?

Temporary DNS entries
The names of the routers created using the hostname command
The IP addresses of workstations allowed to access the router
Permanent name-to-address mappings created using the ip host command
The length of time a host has been connected to the router via Telnet


The show hosts command provides information on temporary DNS entries and permanent name-to-address mappings created using the ip host command.

You have your laptop directly connected into a router's Ethernet port. Which of the following are among the requirements for the copy flash tftp command to be successful?

TFTP server software must be running on the router.
TFTP server software must be running on your laptop.
The Ethernet cable connecting the laptop directly into the router's Ethernet port must be a straight-through cable.
The laptop must be on the same subnet as the router's Ethernet interface.
The copy flash tftp command must be supplied the IP address of the laptop.


Before you back up an IOS image to a laptop directly connected to a router's Ethernet port, make sure the TFTP server software is running on your laptop, that the Ethernet cable is a "crossover," and that the laptop is in the same subnet as the router's Ethernet port, and then you can use the copy flash tftp command from your laptop.

Which of the following services use TCP?




26. Which command will display the CHAP authentication process as it occurs between two routers in the network?


The command debug ppp authentication will show you the authentication process that PPP uses between point-to-point connections.

  What command will display the forward/filter table


The command show mac address-table displays the forward/filter table on the switch.

28. A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?


A receiving host can control the transmitter by using flow control (TCP uses Windowing by default). By decreasing the window size, the receiving host can slow down the transmitting host so the receiving host does not overflow its buffers.

29. Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?


When a routing update is received by a router, the router first checks the administrative distance (AD) and always chooses the route with the lowest AD. However, if two routes are received and they both have the same AD, then the router will choose the one route with the lowest metrics, or in RIP's case, hop count.

30. What is the maximum data rate for the 802.11g standard?


The IEEE 802.11g standard provides a maximum data rate of up to 54Mbps.

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