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Networking Questions And Answers Sample Test 9

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Networking Test 9

You have scored 3 out of 10
You Scored:2
Total Questions:2
Attended Questions:2
Correct Answered:2
Which of the following types of connections can use full duplex?

Hub to hub
Switch to switch
Host to host
Switch to hub
Switch to hostwing types of connections can use full duplex?


Hubs cannot run full-duplex Ethernet. Full duplex must be used on a point-to-point connection between two devices capable of running full duplex. Switches and hosts can run full duplex between each other, but a hub can never run full duplex.

2. Which of the following is true regarding VTP?


All Cisco switches are VTP servers by default. No other VTP information is configured on a Cisco switch by default. You must set the VTP domain name on all switches to be the same domain name or they will not share the VTP database.

Which of the following is true regarding access lists applied to an interface?


A Cisco router has rules regarding the placement of access lists on a router interface. You can place one access list per direction for each layer 3 protocol configured on an interface

4. You want to improve network performance by increasing the bandwidth available to hosts and limit the size of the broadcast domains. Which of the following options will achieve this goal?


By creating and implementing VLANs in your switched network, you can break up broadcast domains at layer 2. For hosts on different VLANs to communicate, you must have a router or layer 3 switch.

Which two statements describe the IP address

The subnet address is
The lowest host address in the subnet is
The last valid host address in the subnet is
The broadcast address of the subnet is


The mask (/23) used with a Class A address means that there are 15 subnet bits and 9 host bits. The block size in the third octet is 2 (256 - 254). So this makes the subnets in the interesting octet 0, 2, 4, 6, etc., all the way to 254. The host is in the 2.0 subnet. The next subnet is 4.0, so the broadcast address for the 2.0 subnet is 3.255. The valid host addresses are 2.1 through 3.254.

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 multicast addresses does EIGRPv6 use?


EIGRPv6's multicast address stayed very near the same. In IPv4 it was; now it is FF02::A (A=10 in hexadecimal notation).

8. You want to run the new 802.1w on your switches. Which of the following would enable this protocol?


802.1w is the also called Rapid Spanning Tree Protocol. It is not enabled by default on Cisco switches, but it is a better STP to run since it has all the fixes that the Cisco extensions provide with 802.1d.

9. What is the address range of a Class B network address in binary?


The range of a Class B network address is 128-191. This makes our binary range 10xxxxxx.

IGRP uses which of the following as default parameters for finding the best path to a remote network?

Hop count
Cumulative interface delay
Path bandwidth value


IGRP uses bandwidth and delay of the line, by default, to determine the best path to a remote network. Delay of the line can sometimes be called the cumulative interface delay.

11. Which of the following is the valid host range for the subnet on which the IP address resides?


256 - 192 = 64. 64 + 64 = 128. 128 + 64 = 192. The subnet is 128, the broadcast address is 191, and the valid host range is the numbers in between, or 129-190.

12. Which of the following is private IP address?


Class A private address range is through Class B private address range is through, and Class C private address range is through

13. The DoD model (also called the TCP/IP stack) has four layers. Which layer of the DoD model is equivalent to the Network layer of the OSI model?


The four layers of the DoD model are Application/Process, Host-to-Host, Internet, and Network Access. The Internet layer is equivalent to the Network layer of the OSI model.

14.      What is split horizon?


A split horizon will not advertise a route back to the same router it learned the route from.

If your routing table has a static, a RIP, and an IGRP route to the same network, which route will be used to route packets by default?


Static routes have an administrative distance of 1 by default. Unless you change this, a static route will always be used over any other found route. IGRP has an administrative distance of 100, and RIP has an administrative distance of 120, by default.

16.   How long is an IPv6 address


An IPv6 address is 128 bits long.

17. You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address?


The command show ip protocols will actually show you the broadcast address for each interface - too bad it isn't a possible answer. Your best answer is show interfaces, which will provide the IP address and mask for each interface.

In Cisco's Unified Wireless Solution, what is the split-MAC architecture?


The split-MAC architecture allows the splitting of 802.11 protocol packets between the Cisco LWAPP-based AP, which handles real-time portions of the protocol, and the WLAN controller, which handles those items that are not time sensitive.

19. 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.

20. Which command will show you whether a DTE or a DCE cable is plugged into serial 0?


The show controllers serial 0 command will show you whether either a DTE or DCE cable is connected to the interface. If it is a DCE connection, you need to add clocking with the clock rate command.

21.    Where is a hub specified in the OSI model


Hubs regenerate electrical signals, which are specified at the Physical layer.

22. When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the clock rate determined?


Clocking on a serial interface is always provided by the CSU/DSU (DCE device). However, if you do not have a CSU/DSU in your nonproduction test environment, then you need to supply clocking with the clock rate command on the serial interface of the router with the DCE cable attached.

How many non-overlapping channels are available with 802.11b?


The IEEE 802.11b standard provides 3 non-overlapping channels.

Which of the following are types of flow control?

Congestion avoidance


The common types of flow control are buffering, windowing, and congestion avoidance.

25. Which command would you use to apply an access list to a router interface?


To apply an access list, the proper command is ip access-group 101 in.

26. When setting up Frame Relay for point-to-point subinterfaces, which of the following must not be configured?


It is very important to remember when studying the CCNA exam objectives, and when configuring Frame Relay with point-to-point subinterfaces, that you do not put an IP address on the physical interface.

27. Which of the following is true when describing a global unicast address?


Unlike unicast addresses, global unicast addresses are meant to be routed.

28. What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?


Port Address Translation (PAT) allows a one-to-many approach to network address translation.

Which three commands can be used to check LAN connectivity problems on a router?

show interfaces
show ip route
dns lookups


The tracert command is a Windows command and will not work on a router! A router uses the traceroute command.

30. What keystroke will terminate setup mode?


You can exit setup mode at any time by using the keystroke Ctrl+C.

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