Computer Networks MCQs
998+ questions with answers
WPA2 is used for security in _______
Extensible authentication protocol is authentication framework frequently used in ______
Pretty good privacy (PGP) is used in ______
PGP encrypts data by using a block cipher called ______
When a DNS server accepts and uses incorrect information from a host that has no authority giving that information, then it is called _________
_________ public key is the hybrid of secret and public key.
________ of individual hosts are useful for identifying some hidden costs.
Security management is both a/an _______ and a/an _______ issue in information management.
Firewalls use _________ as the primary technique of controlling undesired traffic.
Which among the following algorithms implement secret key?
The ________ module in Pretty Good Privacy (PGP) uses MD5 to generate a hash code of the message and encrypts it with the sender’s private key using an RSA algorithm.
What do you mean by integrity protection in Security management?
Open Shortest Path First (OSPF) is also called as _____________
The computation of the shortest path in OSPF is usually done by ____________
Which of the following is false with respect to the features of OSPF?
In OSPF, which protocol is used to discover neighbour routers automatically?
Which of the following is not a type of OSPF packet?
In OSPF header, which field is used to detect errors in the packet?
In OSPF database descriptor packet, if there are more database descriptor packets in the flow, ‘M’ field is set to ____________
In OSPF database descriptor packet, which field is used to indicate that the router is master?
In OSPF database descriptor packet, which field is used to detect a missing packet?
An OSPF router receives an LSA, the router checks its sequence number, and this number matches the sequence number of the LSA that the receiving router already has. What does the receiving router do with the LSA?
An OSPF router receives an LSA. The router checks its sequence number and finds that this number is higher than the sequence number it already has. Which two tasks does the router perform with the LSA?
An OSPF router receives an LSA. The router checks its sequence number and finds that this number is lower than the sequence number it already has. What does the router do with the LSA?
Each LSA has its own age timer. By default, how long does an LSA wait before requiring an update?
Which multicast address does the OSPF Hello protocol use?
DBD packets are involved during which two states?
Which field is NOT a field within an OSPF packet header?
Which two commands are required for basic OSPF configuration?
Which OSPF show command describes a list of OSPF adjacencies?
How many categories are present in the autonomous systems?
Why a border gateway protocol (BGP) session is used in between routers?
Which type of BGP session can be established between 2 routers from different autonomous systems?
What will happen if two networks choose the policy called peering in place of transit service that is given by a provider?
Why border gateway protocol is called as path vector protocol?
How a path can be defined in border gateway protocol?
What are the two broad categories of attributes of a path in border gateway protocol?
Which of the following is not a well-known mandatory attribute of path in border gateway protocol?
Which application is not suitable to use broadcast routing?
Which of the following sentence is incorrect about broadcast routing?
What kind of relation is in between source and destination in broadcast routing?
Which of the following server is used to simulate the broadcast process while broadcast routing is being used?
Which of the following routing saves more memory in case of storing information about routers in the network?
Which name is used for the parts in the network that are divided by hierarchical routing in two level hierarchy?
What is the number of entries in a router, if it belongs to a region with 11 routers and the network has 5 regions?
What is the optimum number of levels(hierarchical) that are required for a network if it has M number of routers?
A network with two level hierarchy has total of 1600 routers and got divided into some parts, a router in the first part which consists of 500 routers has 503 entries in it. The second part and third part have routers with 303 and 603 entries respectively. What is the total no of regions in the network and how many routers are present in each part?
Which of the following is a disadvantage of the hierarchical routing?