Pretty good privacy (PGP) is used in ______

• A. Browser security
• B. Email security
• C. FTP security
• D. Wifi security

PGP encrypts data by using a block cipher called ______

• A. International data encryption algorithm
• B. Private data encryption algorithm
• C. Internet data encryption algorithm
• D. Local data encryption algorithm

When a DNS server accepts and uses incorrect information from a host that has no authority giving that information, then it is called _________

• A. DNS lookup
• B. DNS hijacking
• C. DNS spoofing
• D. DNS authorizing

Open Shortest Path First (OSPF) is also called as _____________

• A. Link state protocol
• B. Error-correction protocol
• C. Routing information protocol
• D. Border gateway protocol

The computation of the shortest path in OSPF is usually done by ____________

• A. Bellman-ford algorithm
• B. Routing information protocol
• C. Dijkstra’s algorithm
• D. Distance vector routing

Which of the following is false with respect to the features of OSPF?

• A. Support for fixed-length subnetting by including the subnet mask in the routing message
• B. More flexible link cost than can range from 1 to 65535
• C. Use of designated router
• D. Distribution of traffic over multiple paths that have equal cost to the destination

In OSPF, which protocol is used to discover neighbour routers automatically?

• A. Link state protocol
• B. Error-correction protocol
• C. Routing information protocol
• D. Hello protocol

Which of the following is not a type of OSPF packet?

• A. Hello
• B. Link-state request
• C. Link-state response
• D. Link-state ack

What is the correct order of the operations of OSPF? i – Hello packets ii – Propagation of link-state information and building of routing tables iii – Establishing adjacencies and synchronization of database

• A. I-ii-iii
• B. I-iii-ii
• C. Iii-ii-i
• D. Ii-i-iii

In OSPF header, which field is used to detect errors in the packet?

• A. Type
• B. Area id
• C. Authentication type
• D. Checksum