Network Security MCQ

Test your knowledge with important Network Security MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Network Security MCQs at Bissoy

• Loopback address is given by:
  ক

  0.0.0.0

  খ

  127.x.x.x

  গ

  255.255.255.255

  ঘ

  None of the mentioned
• SSID stands for
  ক

  Secure Service Identifier

  খ

  Secure Set Independent Device

  গ

  Secure Set Identifier

  ঘ

  Service Set Independent Device
• An HTTP connection uses port __________ whereas HTTPS uses port __________ and invokes SSL.
  ক

  40; 80

  খ

  60; 620

  গ

  80; 443

  ঘ

  620; 80
• In the SSL record protocol operation pad_1 is :
  ক

  is the byte 0x36 repeated 40 times for MD5

  খ

  is the byte 0x5C repeated 40 times for MD5

  গ

  is the byte 0x5C repeated 48 times for SHA-1

  ঘ

  is the byte 0x36 repeated 48 times for MD5
• In the alert protocol the first byte takes the value 1 or 2 which corresponds to ________ and _________ respectively.
  ক

  Select, Alarm

  খ

  Alert, Alarm

  গ

  Warning, Alarm

  ঘ

  Warning, Fatal
• On which port will the server generally listen to for SMTP?
  ক

  port 35

  খ

  port 63

  গ

  port 25

  ঘ

  port 65
• Broadcast address is given by
  ক

  0.0.0.0

  খ

  127.x.x.x

  গ

  255.255.255.255

  ঘ

  None of the mentioned
• The secure authentication connection is referred to as
  ক

  chisel

  খ

  tunnel

  গ

  zeroing

  ঘ

  handshaking
• In which port forwarding technique does the client act on the server’s behalf?
  ক

  Remote Forwarding

  খ

  Local Forwarding

  গ

  Stable Forwarding

  ঘ

  None of the mentioned
• In the IEEE 802.11i PRF, a nonce is generated by the following expression: nonce = PRF (Random Number, “InitCounter”, MAC || Time, Len) What is the value of the ‘Len’ (desirable number of pseudorandom bits)?
  ক

  64

  খ

  128

  গ

  256

  ঘ

  512
• There are a number of possible EAP exchanges that can be used during authentication phase. Typically the message flow between the STA and AP employs the _________ protocol.
  ক

  RADUIS

  খ

  EAPOL

  গ

  TKIP

  ঘ

  KSN
• __________ services are implemented in every 802.11 station, including AP stations. _________ services are provided between BSSs.
  ক

  Station, Distribution

  খ

  Distribution, Station

  গ

  Extended, Basic

  ঘ

  Basic, Extended
• Nsub = n + log2(N/Nsub) is used to find the suffix length.
  ক

  True

  খ

  is used to find the suffix length. a) True [ False
• Which Hashing algorithm is used to derive the PTK for PMK?
  ক

  SHA-1

  খ

  SHA-2

  গ

  SHA-3

  ঘ

  MD-5
• The pairwise transient key (PTK) consists of ______________ keys.
  ক

  3

  খ

  4

  গ

  5

  ঘ

  2
• The pairwise transient key (PTK) is derived from –
  ক

  Key Confirmation Key (KCK)

  খ

  Temporal Key (TK)

  গ

  Pairwise master Key (PMK)

  ঘ

  Pre-Shared Key (PSK)
• The Pairwise master key (PMK) can be derived from either PSK or MSK.
  ক

  True

  খ

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

  pre-shared key

  খ

  pairwise transient key

  গ

  master session key

  ঘ

  key conformation key
• 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 –
  ক

  the parameter B

  খ

  a byte with value FF (11111111)

  গ

  the parameter A

  ঘ

  counter value i
• What is ‘Len’ (desirable number of pseudorandom bits) field in the case of CCMP PTK computation?
  ক

  256

  খ

  384

  গ

  568

  ঘ

  298
• Nonce = PRF (Random Number, “InitCounter”, MAC || Time, Len) What is the Key ‘K’ in the above expression?
  ক

  InitCounter

  খ

  Random Number

  গ

  PRF

  ঘ

  Time
• In the IEEE 802.11i PRF, a nonce is generated by the following expression – nonce = PRF (Random Number, “InitCounter”, MAC || Time, Len) What is the value of the ‘Len’ (desirable number of pseudorandom bits)?
  ক

  64

  খ

  128

  গ

  256

  ঘ

  512
• HMAC SHA-1 produces a hash of length-
  ক

  180 bits

  খ

  240 bits

  গ

  160 bits

  ঘ

  40 bits
• 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.
  ক

  48, replay

  খ

  64, replay

  গ

  48, transient

  ঘ

  64, transient
• CCMP uses which block cipher mode of operation?
  ক

  OFB

  খ

  CFB

  গ

  CTR

  ঘ

  CBC
• The TKIP and CCMP both provide 3 services: Message Integrity, Data Confidentiality and Protected Data Transfer.
  ক

  True

  খ

  False
• Message Integrity Code (MIC) is generated by an algorithm called
  ক

  Susan

  খ

  Michael

  গ

  Barbara

  ঘ

  Rijndael
• GTK is encrypted using:
  ক

  Either RC4 or AES

  খ

  DES

  গ

  Rabin

  ঘ

  ECC
• The MPDU exchange for distributing pairwise keys is known as __________
  ক

  2-way handshake

  খ

  4-way handshake

  গ

  5 way handshake

  ঘ

  3 way handshake
• Which one of these is not a Traffic control key?
  ক

  GTK

  খ

  TK

  গ

  MIC Key

  ঘ

  WEP Key