.png)
Q1. IPv6 address is of ........ number of octets.
Options:
A) 8
B) 64
C) 16
D) All of the above
Correct Answer: C) 16
Q2. IP addresses of the following class are used for multicasting.
Options:
A) Class B
B) Class C
C) Class D
D) Class A
Correct Answer: C) Class D
Q3. Addresses of classes A, B, and C are:
Options:
A) Multicast
B) Reserved
C) Unicast
D) Broadcast
Correct Answer: C) Unicast
Q4. An IP packet must contain:
Options:
A) Source address
B) Destination address
C) Source and destination address
D) Source or destination address
Correct Answer: C) Source and destination address
Q5. Following is not an IP translation method:
Options:
A) Tunneling
B) Dual stack
C) Header translation
D) All of the above
Correct Answer: D) All of the above
Q6. What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?
Options:
A) 14
B) 15
C) 16
D) 30
Correct Answer: A) 14
Explanation: A subnet mask of 255.255.255.224 provides 32 IP addresses, out of which 2 are reserved (network and broadcast), leaving 30 usable addresses.
Q7. The input and output ports of a router perform the ......... layer functions of the router.
Options:
A) Physical and data link
B) Network
C) Transport
D) None of the above
Correct Answer: A) Physical and data link
Q8. Routing between autonomous systems is referred to as:
Options:
A) Interdomain routing
B) Intradomain routing
C) Both A and B
D) None of the above
Correct Answer: A) Interdomain routing
Q9. In multicast routing, each involved router needs to construct a .......... path tree for each group.
Options:
A) Path vector
B) Distance vector
C) Shortest
D) None of the above
Correct Answer: C) Shortest
Q10. In ............, each node maintains a vector (table) of minimum distances to every node.
Options:
A) Path vector
B) Distance vector
C) Link state
D) None of the above
Correct Answer: B) Distance vector
Q11. Emulation of ......... through .......... is not efficient and may create long delays.
Options:
A) Unicasting, multiple unicasting
B) Multicasting, multiple unicasting
C) Broadcasting, multicasting
D) None of the above
Correct Answer: B) Multicasting, multiple unicasting
Q12. A static table is one:
Options:
A) With manual entries
B) Which is updated automatically
C) Either A or B
D) None of the above
Correct Answer: A) With manual entries
Q13. The Routing Information Protocol (RIP) is an intradomain routing based on:
Options:
A) Distance vector
B) Link state
C) Path vector
D) None of the above
Answer: A) Distance vector
Q14. At the sender site, there may be several processes running that need to send packets. How does the transport layer deal with this issue?
Options:
A) Multiplexing and Demultiplexing
B) End-to-end delivery
C) Congestion control
D) Encryption
Answer: A) Multiplexing and Demultiplexing
Q15. Which of the following transport layer protocols provides unreliable, connectionless service?
Options:
A) UDP
B) TCP
C) SCTP
D) FTP
Answer: A) UDP
Q16. Which of the following is a stream-oriented protocol?
Options:
A) UDP
B) TCP
C) SCTP
D) Both B and C
Answer: D) Both B and C
Q17. Which flag is set to abruptly terminate a TCP connection?
Options:
A) URG
B) PUSH
C) RST
D) FIN
Answer: C) RST
Q18. Which protocol in the email system pushes messages from the client to the server?
Options:
A) DNS
B) SMTP
C) IMAP
D) POP
Answer: B) SMTP
Q19. Which generic domain label is used to describe commercial organizations?
Options:
A) Biz
B) Com
C) Net
D) Org
Answer: B) Com
Q20. DNS uses which TCP port?
Options:
A) 80
B) 53
C) 110
D) 25
Answer: B) 53