B CompE Bachelor of Computer Engineering Computer Networks 2

Question 1

In a TCP three-way handshake, what is the correct sequence of messages?

Accepted Answer

SYN, SYN-ACK, ACK

Answer

A TCP connection starts with SYN from the client, SYN-ACK from the server, and a final ACK from the client.

Question 2

Which routing protocol uses the Bellman-Ford algorithm?

Accepted Answer

RIP

Answer

RIP (Routing Information Protocol) uses the Bellman-Ford algorithm to calculate the shortest path based on hop count.

Question 3

What is the subnet mask for a /26 CIDR block?

Accepted Answer

255.255.255.192

Answer

A /26 prefix means 26 network bits, leaving 6 host bits, which corresponds to a subnet mask of 255.255.255.192.

Question 4

Which layer does a standard switch primarily operate on in the OSI model?

Accepted Answer

Layer 2 - Data Link

Answer

A standard switch operates at Layer 2 (Data Link), forwarding frames based on MAC addresses.

Question 5

What port number does HTTPS use by default?

Accepted Answer

443

Answer

HTTPS (HTTP Secure) uses port 443 by default to provide encrypted web communication via TLS/SSL.

B CompE Bachelor of Computer Engineering Practice Test