Network Layer Quiz

Which of the following is NOT a primary function of the network layer?

• Routing

• Error detection

• Packet forwarding

• Addressing

What type of service does the network layer provide to the transport layer?

• Reliable data delivery

• Connection-oriented service

• Logical communication between hosts

• Physical transmission of signals

In packet switching, the transmission time of a packet depends on the:

• Number of routers

• Packet size and link bandwidth

• Propagation delay only

• Switching technique used

Which metric is NOT typically used to measure packet switching performance?

• Delay

• Throughput

• Packet loss

• Encryption strength

In classful addressing, what is the address range of Class A?

• 0.0.0.0 to 127.255.255.255

• 128.0.0.0 to 191.255.255.255

• 192.0.0.0 to 223.255.255.255

• 224.0.0.0 to 239.255.255.255

Which class of IP addresses is reserved for multicasting?

• Class A

• Class B

• Class C

• Class D

How many usable host addresses are available in a Class C network?

• 254

• 256

• 65,534

• 1,048,576

Classless addressing was introduced to solve the problem of:

• IP address depletion

• Lack of routing protocols

• Insecure communication

• Network collisions

Which of the following NAT types allows multiple private IP addresses to share a single public IP?

• Static NAT

• Dynamic NAT

• Port Address Translation (PAT)

• One-to-One NAT

The decision to forward an IP packet is primarily based on:

• The source IP address

• The MAC address

• The destination IP address

• The TTL value