Cryptographic hash function takes an arbitrary block of data and returns _________

Networking - Quiz(MCQ)

fixed size bit string

variable size bit string

variable sized byte string

both fixed size bit string and variable size bit string

Correct Answer : fixed size bit string

Explanation : Cryptographic hash functions are used in digital signatures and message authentication codes. The only issue with it is that it returns the same hash value every time for a message making it vulnerable to attackers to evaluate and break the cipher.

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EIGRP uses the ____________ algorithm for finding shortest path.

DUAL

SPF

Linkstat

Djikstraâ€™s

Correct Answer : DUAL

Explanation : EIGRP uses the DUAL algorithm for finding shortest path. DUAL stands for diffusing update algorithm and it is used to prevent routing loops by recalculating routes globally.

Administrative distance for external EIGRP route is _______

100

170

135

190

Correct Answer : 170

Explanation : Routers use the metric of administrative distance to select the best path when there are different routes to the same destination from two different routing protocols as it is a measure of reliability of routing protocols. Administrative distance for external EIGRP is 170.

For default gateway, which of following commands will you use on a Cisco router?

Default network

IP default route

IP default network

IP default gateway

Correct Answer : IP default network

Explanation : IP default network command is used to find the default gateway in Cisco router. If the router finds routes to the node, it considers the routes to that node for installation as the gateway to it.