Computer Networking Quiz (or) Computer Networking MCQ (Multiple Choice Questions)

1 .

What is the purpose of a shadow honeypot?

A)

To flag attacks against known vulnerabilities

B)

To enhance the accuracy of a traditional honeypot

C)

To help reduce false positives in a signature-based IDS

D)

To randomly check suspicious traffic identified by an anomaly detection system

Correct Answer : Option (D) : To randomly check suspicious traffic identified by an anomaly detection system

Explanation : “Shadow honeypots,” as researchers call them, share all the same characteristics of protected applications running on both the server and client side of a network and operate in conjunction with an ADS.

2 .

“Semantics-aware” signatures automatically generated by Nemean are based on traffic at which two layers?

A)

Session layer and Transport layer

B)

Network layer and Application layer

C)

Application layer and Session layer

D)

Application layer and Transport layer

Correct Answer : Option (C) : Application layer and Session layer

Explanation : Nemean automatically generates “semantics-aware” signatures based on traffic at the session and application layers. These signatures are used to ensure that no malicious operation is contained in the traffic.

3 .

Which protocol does the PPP protocol provide for handling the capabilities of the connection/link on the network?

A)

LCP

B)

NCP

C)

Both LCP and NCP

D)

TCP

Correct Answer : Option (C) : Both LCP and NCP

Explanation : LCP stands for Link Control Protocol and NCP stands for Network Control Protocol. LCP and NCP are the PPP protocols which provide interface for handling the capabilities of the connection/link on the network.

4 .

PPP provides the _______ layer in the TCP/IP suite.

A)

Network

B)

Link

C)

Transport

D)

Application

Correct Answer : Option (B) : Link

Explanation : PPP provides function of the link layer in the TCP/IP suite. It focuses on the link between two nodes that is going to be used by the users to communicate. It can use pre-installed phone line for the purpose.

5 .

PPP consists of ________components

A)

Three (encapsulating, a link control protocol, NCP)

B)

Three (encapsulating, the Domain Name system)

C)

Two (a link control protocol, Simple Network Control protocol)

D)

One (Simple Network Control protocol)

Correct Answer : Option (A) : Three (encapsulating, a link control protocol, NCP)

Explanation : PPP consists of three components namely Link Control Protocol (LCP), Network Control Protocol (NCP), and Encapsulation. LCP and NCP are the PPP protocols which provide interface for handling the capabilities of the connection/link on the network and encapsulation provides for multiplexing of different network-layer protocols.

6 .

EIGRP metric is _____

A)

Delay only

B)

Hop Count

C)

Bandwidth only

D)

K-values

Correct Answer : Option (D) : K-values

Explanation : EIGRP metric is K-values which are integers from 0 to 128. They are used to calculate the overall EIGRP cost with bandwidth and delay metrics.

7 .

EIGRP sends a hello message after every ____ seconds.

A)

15s

B)

180s

C)

5 seconds (LAN), 5 seconds (WAN)

D)

5 seconds (LAN), 60 seconds (WAN)

Correct Answer : Option (D) : 5 seconds (LAN), 60 seconds (WAN)

Explanation : EIGRP routers broadcast the hello packets frequently to familiarize with the neighbors. EIGRP routers send the hello message after every 5 seconds on LAN, and every 60 seconds on WAN.

8 .

For default gateway, which of following commands will you use on a Cisco router?

A)

Default network

B)

IP default route

C)

IP default network

D)

IP default gateway

Correct Answer : Option (C) : IP default network

Explanation : IP default network command is used to find the default gateway in Cisco router. If the router finds routes to the node, it considers the routes to that node for installation as the gateway to it.

9 .

Administrative distance for external EIGRP route is _______

A)

100

B)

170

C)

135

D)

190

Correct Answer : Option (B) : 170

Explanation : Routers use the metric of administrative distance to select the best path when there are different routes to the same destination from two different routing protocols as it is a measure of reliability of routing protocols. Administrative distance for external EIGRP is 170.

10 .

EIGRP uses the ____________ algorithm for finding shortest path.

A)

DUAL

B)

SPF

C)

Linkstat

D)

Djikstra’s

Correct Answer : Option (A) : DUAL

Explanation : EIGRP uses the DUAL algorithm for finding shortest path. DUAL stands for diffusing update algorithm and it is used to prevent routing loops by recalculating routes globally.