Quiz 5B: Explain IPv4 Forwarding

What layer of the OSI model does IP forwarding at layer2 correspond to?

• Network layer

• Transport layer

• Data Link layer

• Physical layer

What does IP use to forward frames within each subnet or broadcast domain?

• IP addresses

• MAC addresses

• Default gateway

• Broadcast address

What is the primary purpose of a subnet mask?

• To conceal the host ID portion of an IP address

• To identify the version of IP in use

• To manage logical addressing

• To enable packet forwarding between networks

What does IP use to identify each host interface at the Network layer?

• MAC address

• IP address

• Default gateway

• Broadcast address

What is the purpose of a default gateway?

• To forward packets to a remote network

• To translate between layer3 IP addresses and layer2 MAC addresses

• To perform address resolution

• To deliver packets locally within the same subnet

What protocol allows routers to share information about known networks and possible paths to them?

• ARP

• IGMP

• ICMP

• Routing protocols

What is the term used to describe forwarding at layer3?

• Switching

• Routing

• Addressresolution

• Multicasting

What is used to perform a broadcast at the network layer?

• Multicast address

• Any IP address within the network

• Broadcast address

• Unicast address

When does local address resolution take place using ARP?

• Only for unicast packets

• Only for broadcast packets

• Only for multicast packets

• When hosts are within the same broadcast domain or subnet

When does IP conclude that the destination IPv4 address is on the same IP network?

• When the masked portions of the source and destination IP addresses match

• When the masked portions of the source and destination IP addresses don't match

• When the destination IP address is a broadcast address

• When the destination IP address is a multicast address