Free Printable EC8702_Adhoc & Wireless sensor network

Worksheets

EC8702_Adhoc & Wireless sensor network_Quiz-V

Total questions: 30

Worksheet time: 30mins

Name

Class

Date

Wireless networks are highly vulnerable to security attacks compared to wired networks

true

false

A security protocol for ad hoc wireless networks should satisfy the following requirements.

Confidentiality

Integrity

Availability

All of them

The data sent by the source node should reach the destination node as it was sent or unaltered is called

Confidentiality

Integrity

Availability

Non-repudiation

security protocol for ad hoc wireless is a very challenging because of

shared broadcast radio channel

insecure operating<br />environment

lack of central authority

All of them

If no proper authentication mechanism is used, an intruder would be able to join into the network quite easily and carry out his/her attacks.

true

false

Attacks on ad hoc wireless networks can be classified into two broad categories,namely, passive and active attacks

true

false

An attack does not disrupt the operation of the network

Active

passive

both

none of them

An active attack attempts to alter or destroy the data being exchanged in the network, thereby disrupting the normal functioning of the network

Active

passive

both

none of them

External attacks are carried out by nodes that do not belong to the network

true

false

10.

External attacks can be prevented by using standard security mechanisms like

encryption

firewalls

both

none of them

11.

_____________attacks are from compromised nodes that are actually part of the network.

External

Internal

both

none of them

12.

internal attacks are more severe and difficult to detect when compared to external attacks

true

false

13.

A _________ is used to separate a local network from the outside world.

firewall

antivirus

gateway

none of them

14.

Firewall is a software which works closely with a router program and filters

true

false

15.

A compromised node may leak confidential or important information to unauthorized nodes in the network is called

Byzantine attack

Information disclosure

Blackhole attack

Wormhole attack

16.

a malicious node tries to consume/waste away resources of other nodes present in the network.

Byzantine attack

Information disclosure

Blackhole attack

Resource consumption attack

17.

A denial of service (DoS) attacks can be launched against any layer in the network protocol stack.

true

false

18.

Cryptography is one of the most common and reliable means to ensure security.

true

false

19.

Cryptography is specific to ad hoc wireless networks.

true

false

20.

The original information to be sent from one person to another is called

core data

plaintext

encoded data

cipher text

21.

The plaintext is converted into ciphertext by the process called

encryption

Decryption

cryptography

none of them

22.

_______are small amounts of information used by the cryptographic algorithms.

plaintext

cipher text

Keys

none of them

23.

algorithms, which use the same key for encryption and decryption is called

symmetric key

Asymmetric key

both

none of them

24.

algorithms, which use two different keys for encryption and decryption.

symmetric key

Asymmetric key

both

none of them

25.

Symmetric key algorithms donot rely on the presence of the shared key at both the sender and receiver.

true

false

26.

A ________ is an encryption scheme in which the plaintext is broken into fixed-length segments called blocks

block cipher

stream ciphers

both

none of them

27.

Digital signatures schemes are also based on public key encryption.

true

false

28.

The process of distributing keys to all interested parties before the start of communication is called

key transport

key predistribution

key arbitration

key agreement

29.

Most key agreement schemes are based on asymmetric key algorithms

YES

30.

Sensor protocol for information via negotiation (SPIN) is a data centric protocol which is used in wireless Sensor network.

true

false

100 %

EC8702_Adhoc & Wireless sensor network_Quiz-V

Total questions: 30

Worksheet time: 30mins

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