Explore topic-wise MCQs in Network Security.

This section includes 10 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.

The pairwise transient key (PTK) consists of ______________ keys.

A. 3
B. 4
C. 5
D. 2
Answer» B. 4
Discussion
2.

The pairwise transient key (PTK) is derived from

A. Key Confirmation Key (KCK)
B. Temporal Key (TK)
C. Pairwise master Key (PMK)
D. Pre-Shared Key (PSK)
Answer» D. Pre-Shared Key (PSK)
Discussion
3.

The Pairwise master key (PMK) can be derived from either PSK or MSK.

A. True
B. False
Answer» B. False
Discussion
4.

A __________ is a secret key shared by the AP and a STA and installed in some fashion outside the scope of IEEE 802.11i.

A. pre-shared key
B. pairwise transient key
C. master session key
D. key conformation key
Answer» B. pairwise transient key
Discussion
5.

The message input to the IEEE 802.11 pseudorandom Function consists of 4 items concatenated together. Which of the following option is not a part of this message input

A. the parameter B
B. a byte with value FF (11111111)
C. the parameter A
D. counter value i
Answer» C. the parameter A
Discussion
6.

What is Len (desirable number of pseudorandom bits) field in the case of CCMP PTK computation?

A. 256
B. 384
C. 568
D. 298
Answer» C. 568
Discussion
7.

Nonce = PRF (Random Number, InitCounter , MAC || Time, Len)What is the Key K in the above expression?

A. InitCounter
B. Random Number
C. PRF
D. Time
Answer» D. Time
Discussion
8.

In the IEEE 802.11i PRF, a nonce is generated by the following expression nonce = PRF (Random Number, InitCounter , MAC || Time, Len)

A. nWhat is the value of the Len (desirable number of pseudorandom bits)?
B. 64
C. 128
D. 256
E. 512
Answer» D. 256
Discussion
9.

HMAC SHA-1 produces a hash of length-

A. 180 bits
B. 240 bits
C. 160 bits
D. 40 bits
Answer» D. 40 bits
Discussion
10.

In CCMP a 128-bit AES Key is used for both integrity and confidentiality. The scheme uses a ___________ bit packet number to construct a nonce to prevent __________ attacks.

A. 48, replay
B. 64, replay
C. 48, transient
D. 64, transient
Answer» B. 64, replay
Discussion