108
71.5k

Network Security Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Computer Science Engineering (CSE) , Information Technology Engineering (IT) .

1.

Message ________ means privacy that the sender and reciever expect privacy.

A. confidentiality
B. integrity
C. authentication
D. Authorization
Answer» A. confidentiality
2.

Message_____ means that the data must arrive at the reciever exactly as sent

A. confidentiality
B. integrity
C. authentication
D. Authorization
Answer» B. integrity
3.

Message _______ means that the receiver is ensured that the message message is coming from the indended sender not an imposter.

A. confidentiality
B. integrity
C. authentication
D. Authorization
Answer» C. authentication
4.

__________means that a sender must not be able to deny sending a message that he sent.

A. Confidentiality
B. Integrity
C. Authentication
D. Nonrepudiation
Answer» D. Nonrepudiation
5.

A(n) can be used to preserve the integrity of a document or a message.

A. message digest
B. message summary
C. encrypted message
D. ENCRYPTION
Answer» A. message digest
6.

A(n) function creates a message digest out of a message.

A. encryption
B. decryption
C. hash
D. integrity
Answer» C. hash
7.

A hash function must meet criteria.

A. two
B. three
C. four
D. ten
Answer» B. three
8.

Password-based authentication can be divided into two broad categories: and _____

A. fixed; variable
B. time-stamped; fixed
C. fixed; one-time
D. none of the above
Answer» C. fixed; one-time
9.

_ creates a secret key only between a member and the center.

A. CA
B. KDC
C. KDD
D. CD
Answer» B. KDC
10.

The secret key between members needs to be created as a ________ key when two members contact KDC.

A. public
B. session
C. complimentary
D. private
Answer» B. session
11.

is a popular session key creator protocol that requires an authentica

A. KDC
B. Kerberos
C. CA ion server and a ticket-granting server.
D. CD
Answer» A. KDC
12.

A(n) is a hierarchical system that answers queries about key certification.

A. KDC
B. PKI
C. CA
D. CD
Answer» C. CA
13.

Firewalls are to protect against

A. Virus Attacks
B. Fire Attacks
C. Data Driven Attacks
D. Unauthorized Attacks
Answer» D. Unauthorized Attacks
14.

The ________criterion ensures that we cannot find two messages that hash to the same digest

A. one-wayness
B. weak-collision-resistance
C. strong-collision-resistance
D. Keyless
Answer» B. weak-collision-resistance
15.

_______________________ is a term used in cryptography that refers to a message before encryption or after decryption.

A. Cipher text
B. Plain text
C. Plain script
D. Original text
Answer» B. Plain text
16.

The ________ is encrypted text

A. cipher text
B. cipher scricpt
C. secret text
D. secret script
Answer» C. secret text
17.

_______________________ ensures that information are in a format that is true and correct to its original purposes.

A. Availability
B. Confidentiality
C. Cryptography
D. Integrity
Answer» A. Availability
18.

_____________________ ensures that information and resources are available to those who need them.

A. Availability
B. Confidentiality
C. Cryptography
D. Integrity
Answer» D. Integrity
19.

_______________________ is the process of identifying an individual, usually based on a username and password.

A. Authentication
B. Authorization
C. integrity
D. crytography
Answer» A. Authentication
20.

___________________ is the process of giving individuals access to system objects based on their identity.

A. Authentication
B. Authorization
C. key
D. Confidentiality
Answer» B. Authorization
21.

In symmetric-key cryptography, the key locks and unlocks the box is

A. Same
B. shared
C. private
D. Public
Answer» A. Same
22.

The ciphers of today are called round ciphers because they involve

A. Single Round
B. Double Rounds
C. Multiple Round
D. Round about
Answer» C. Multiple Round
23.

Symmetric-key cryptography started thousands of years ago when people needed to exchange

A. Files
B. Packets
C. Secrets
D. Tr
Answer» A. Files
24.

The Advanced Encryption Standard (AES) was designed

A. National Institute of Standards and Technology
B. IBM
C. HP
D. Intel
Answer» A. National Institute of Standards and Technology
25.

The Mobile Application Protocol (MAP) typically runs on top of which protocol ?

A. SNMP (Simple Network Management Protocol)
B. SMTP (Simple Mail Transfer Protocol)
C. SS7 (Signalling System 7)
D. HTTP (Hyper Text Tr
Answer» C. SS7 (Signalling System 7)
26.

If a packet arrive with an M-bit value is '1' and a fragmentation offset value '0', then it is ______ fragment.

A. First
B. Middle
C. Last
D. Four
Answer» A. First
27.

The design issue of Datalink Layer in OSI Reference Model is

A. Framing
B. Representation of bits
C. Synchronization of bits
D. Connection control
Answer» A. Framing
28.

Data Encryption Techniques are particularly used for _______.

A. protecting data in Data Communication System
B. reduce Storage Space Requirement
C. enhances Data Integrity
D. decreases Data Integrity
Answer» A. protecting data in Data Communication System
29.

An example of a layer that is absent in broadcast networks is:

A. Physical layer
B. Presentation layer
C. Network layer Application layer
D. none
Answer» C. Network layer Application layer
30.

Encryption and Decryption is the responsibility of ___ Layer.

A. Physical
B. Network
C. Application
D. Datalink
Answer» C. Application
31.

The VLF and LF bauds use propagation for communication

A. Ground
B. Sky
C. Line of sight
D. Space
Answer» A. Ground
32.

The start and stop bits are used in serial communication for

A. error detection
B. error correction
C. Synchronization
D. slowing down the communication
Answer» C. Synchronization
33.

___________ is a type of transmission impairment in which the Signal looses strength due to The resistance of the transmission medium.

A. Attenuation
B. Distortion
C. Noise
D. Decible
Answer» A. Attenuation
34.

________________ is a bit-oriented protocol for communication over point-to-point and multi-point links .

A. Stop-and-wait
B. HDLC
C. Sliding window
D. Go-back-N
Answer» A. Stop-and-wait
35.

In substitution, a character in the plaintext is always changed to the same character in the ciphertext, regardless of its position in the text.

A. polyalphabetic
B. mono alphabetic
C. Transpositional
D. multialphabetic
Answer» B. mono alphabetic
36.

Which of the following is not associated with the session layer ?

A. Dialog control
B. Token management
C. Semantics of the information transmitted
D. Synchronization
Answer» C. Semantics of the information transmitted
37.

What is the size of the 'total length' field in IPv4 datagram ?

A. 4 bits
B. 8 bits
C. 16 bits
D. 32 bits
Answer» C. 16 bits
38.

The process of dividing an analog signal into a string of discrete outputs, each of constant amplitude, is called :

A. Strobing
B. Amplification
C. Conditioning
D. Quantization
Answer» D. Quantization
39.

Which transmission technique guarantees that data packets will be received by the receiver in the same order in which they were sent by the sender.

A. Broadcasting
B. Unicasting
C. Packet switching
D. Circuit switching
Answer» D. Circuit switching
40.

Which of the following control fields in TCP header is used to specify whether the sender has no more data to transmit?

A. FIN
B. RST
C. SYN
D. PSH
Answer» A. FIN
41.

Which are the two modes of IP security?

A. Transport and certificate
B. Transport and tunnel
C. Certificate and tunnel
D. Preshared and tr
Answer» A. Transport and certificate

Done Studing? Take A Test.

Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.