CH 4: Network Layer

What is the purpose of internetworking?

• To provide error control and flow control

• To create a larger interconnected network

• To establish a connection between two hosts

• To enable seamless communication between devices across different networks

What is the responsibility of the network layer?

• Responsible for host-to-host delivery

• Responsible for physical network connections

• Responsible for data link layer protocols

• Responsible for application layer protocols

What is the Internet at the network layer considered as?

• Packet-switched network

• Message-switched network

• Connection-oriented network

• Circuit-switched network

What is the delivery mechanism used by IPv4?

• Unreliable and connection-oriented protocol

• Unreliable and connectionless datagram protocol

• Reliable and connectionless datagram protocol

• Reliable and connection-oriented protocol

What is the process of breaking down large data packets into smaller fragments called?

• Fragmentation

• Encapsulation

• Decapsulation

• Routing

What is the length of an IPv6 address?

• 512 bits

• 64 bits

• 128 bits

• 256 bits

What is the advantage of IPv6 over IPv4?

• Smaller address space

• Less secure

• Larger address space

• No support for real-time audio and video

What does the payload of an IPv6 packet consist of?

• Optional extension headers and data from an upper layer

• Mandatory base header only

• Data from an upper layer only

• Optional extension headers only

What is the format of an IPv6 datagram?

• Mandatory base header followed by the payload and optional extension headers and data from an upper layer

• Mandatory base header followed by the payload and data from an upper layer

• Mandatory base header followed by the payload and optional extension headers

• Mandatory base header followed by the payload

What is the role of routers in internetworking?

• Responsible for routing the packets through the routers or switches

• Responsible for application layer protocols

• Responsible for physical network connections

• Responsible for data link layer protocols