Online Networking Test - Networking Test 4

Instruction:

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Total number of questions: 20.
Time allotted: 30 minutes.
Each question carries 1 mark; there are no negative marks.
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All the best!

What PPP protocol provides dynamic addressing, authentication, and multilink?

NCP

HDLC

LCP

X.25

[#]

Which of the following is the valid host range for the subnet on which the IP address 192.168.168.188 255.255.255.192 resides?

192.168.168.129-190

192.168.168.129-191

192.168.168.128-190

192.168.168.128-192

[#]

What protocols are used to configure trunking on a switch?

VLAN Trunking Protocol
VLAN
802.1Q
ISL

1 and 2

3 and 4

1 only

2 only

[#]

What is the subnetwork address for a host with the IP address 200.10.5.68/28?

200.10.5.56

200.10.5.32

200.10.5.64

200.10.5.0

[#]

Using the illustration from the previous question, what would be the IP address of S0 if you were using the first subnet? The network ID is 192.168.10.0/28 and you need to use the last available IP address in the range. Again, the zero subnet should not be considered valid for this question.

192.168.10.24

192.168.10.62

192.168.10.30

192.168.10.127

[#]

If you wanted administrators to see a message when logging into the router, which command would you use?

message banner motd

banner message motd

banner motd

message motd

[#]

You type the following command into the router and receive the following output:

Router#show serial 0/0
        ^
% Invalid input detected at '^' marker.

Why was this error message displayed?

You need to be in privileged mode.

You cannot have a space between serial and 0/0.

The router does not have a serial0/0 interface.

Part of the command is missing.

[#]

What layer of the OSI model would you assume the problem is in if you type show interface serial 1 and receive the following message? "Serial1 is down, line protocol is down."

Physical layer

Data Link layer

Network layer

None. It is a router problem.

[#]

What is split horizon?

Information about a route should not be sent back in the direction from which the original update came.

It splits the traffic when you have a large bus (horizon) physical network.

It holds the regular updates from broadcasting to a downed link.

It prevents regular update messages from reinstating a route that has gone down.

[#]

10.

What is route poisoning?

It sends back the protocol received from a router as a poison pill, which stops the regular updates.

It is information received from a router that can't be sent back to the originating router.

It prevents regular update messages from reinstating a route that has just come up.

It describes when a router sets the metric for a downed link to infinity.

[#]

11.

If routers in a single area are configured with the same priority value, what value does a router use for the OSPF Router ID in the absence of a loopback interface?

The lowest IP address of any physical interface

The highest IP address of any physical interface

The lowest IP address of any logical interface

The highest IP address of any logical interface

[#]

12.

Which of the following are benefits of VLANs?

They increase the size of collision domains.
They allow logical grouping of users by function.
They can enhance network security.
They increase the size of broadcast domains while decreasing the number of collision domains.
They simplify switch administration.
They increase the number of broadcast domains while decreasing the size of the broadcast domains.

1 and 5

2 and 4

1, 3 and 5

2, 3 and 6

[#]

13.

Which of the following would be good reasons to run NAT?

You need to connect to the Internet and your hosts don't have globally unique IP addresses.
You change to a new ISP that requires you to renumber your network.
You don't want any hosts connecting to the Internet.
You require two intranets with duplicate addresses to merge.

1, 2 and 4

2 and 4

3 only

All of the above

[#]

14.

Which command would you place on interface on a private network?

ip nat inside

ip nat outside

ip outside global

ip inside local

[#]

15.

Which command would you place on interface connected to the Internet?

ip nat inside

ip nat outside

ip outside global

ip inside local

[#]

16.

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

[#]

17.

What is the maximum data rate for the 802.11a standard?

6Mbps

11Mbps

22Mbps

54Mbps

[#]

18.

Which of the following is true when describing a multicast address?

Packets addressed to a unicast address are delivered to a single interface.

Packets are delivered to all interfaces identified by the address. This is also called a one-to-many address.

Identifies multiple interfaces and is only delivered to one address. This address can also be called one-to-one-of-many.

These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.

[#]

19.

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

The Frame Relay encapsulation on the physical interface

The local DLCI on each subinterface

An IP address on the physical interface

The subinterface type as point-to-point

[#]

20.

The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

802.1

Frame Relay

HDLC

PPP

PAP

[#]

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Online Networking Test - Networking Test 4

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