Explore topic-wise MCQs in Network Security.

This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Network Security knowledge and support exam preparation. Choose a topic below to get started.

1.

A device that helps prevent congestion and data collisions –

A. Switch
B. Hub
C. Gateway
D. Proxy Server
Answer» B. Hub
Discussion
2.

After performing bit stuffing on the following stream : 01101111111111111110010, the output is-

A. 01101111101111101111100010
B. 01101111111111111110010111
C. 10010000000000000000001101
D. 01101111111111111111110010
Answer» B. 01101111111111111110010111
Discussion
3.

A slotted ALOHA network transmits 200-bit frames using a shared channel with a 200-kbps bandwidth. Find the throughput if the system (all stations together) produces 1000 frames per second.

A. 92 frames
B. 368 frames
C. 276 frames
D. 151 frames
Answer» C. 276 frames
Discussion
4.

Generate the CRC codeword for the data word 1101011011 using generator 10011. Also write both in the polynomial form.

A. 11010110110011
B. 11010110110110
C. 11010110111100
D. 11010110111110
Answer» E.
Discussion
5.

Assume we need to download text documents at the rate of 100 pages per second. What is the required bit rate of the channel?

A. 1.846 Mbps
B. 1.536 Mbps
C. 2.4 Mbps
D. None of the Mentioned
Answer» C. 2.4 Mbps
Discussion
6.

Nsub = n + log2(N/Nsub) is used to find the suffix length.

A. True
B. is used to find the suffix length.a) Trueb) False
Answer» C.
Discussion
7.

Number of Blocks in class C are –

A. 27
B. 28
C. 214
D. 29
Answer» B. 28
Discussion
8.

GENERATE_THE_CRC_CODEWORD_FOR_THE_DATA_WORD_1101011011_USING_GENERATOR_10011._ALSO_WRITE_BOTH_IN_THE_POLYNOMIAL_FORM.?$

A. 11010110110011
B. 11010110110110
C. 11010110111100
D. 11010110111110
Answer» E.
Discussion
9.

After performing bit stuffing on the following stream : 01101111111111111110010, the output is-$

A. 01101111101111101111100010
B. 01101111111111111110010111
C. 10010000000000000000001101
D. 01101111111111111111110010
Answer» B. 01101111111111111110010111
Discussion
10.

A slotted ALOHA network transmits 200-bit frames using a shared channel with a 200-kbps bandwidth. Find the throughput if the system (all stations together) produces 1000 frames per second.$

A. 92 frames
B. 368 frames
C. 276 frames
D. 151 frames
Answer» C. 276 frames
Discussion
11.

How many layers are present in the TCP/IP Reference model?

A. 6
B. 7
C. 5
D. 4
Answer» E.
Discussion
12.

Which one of these does not lie in the Link Layer of the TCP/IP Model?

A. DSL
B. IP
C. SONET
D. 802.11
Answer» C. SONET
Discussion
13.

A device that helps prevent congestion and data collisions –$

A. Switch
B. Hub
C. Gateway
D. Proxy Server
Answer» B. Hub
Discussion
14.

A packet has arrived in which the offset value is 100, the value of HLEN is 5 and the value of the total length field is 100. What is the number of the last byt?

A. 880
B. 879
C. 881
D. 801
Answer» C. 881
Discussion
15.

The first address in a range of addresses is 14.11.45.96. If the number of addresses in the range is 32, what is the last address?

A. 14.11.44.64
B. 14.11.44.128
C. 14.12.44.128
D. 14.11.45.127
Answer» E.
Discussion
16.

Nsub = n + log2(N/Nsub) is used to find the suffix length.

A. True
B. False
Answer» C.
Discussion
17.

If the first address is First address = 18.14.12.0/22. What is the last address?

A. 18.14.15.128/22
B. 18.14.15.64/22
C. 18.14.15.32/22
D. 18.14.15.255/22
Answer» E.
Discussion
18.

A router receives a packet with the destination address 132.7.21.84. Find the network address of the packet.

A. 1.32.7
B. 132.7
C. 13.27
D. 21.84
Answer» C. 13.27
Discussion
19.

Number of Blocks in class C are –

A. 2<sup>7</sup>
B. 2<sup>8</sup>
C. 2<sup>14</sup>
D. 2<sup>9</sup>
Answer» B. 2<sup>8</sup>
Discussion