1. What information in the IP packet does the router use to determine which interface to forward the packet?
- destination MAC address
- source MAC address
- destination IP address
- source MAC address
Explanation: The router uses the destination IP address to determine which interface to forward the packet.
2. True or false? If Host-A has an IP packet to send to Host-B, and Host-A has determined that Host-B is on a different network. Host-A will encapsulate the IP packet in an Ethernet frame with the destination MAC address of the its default gateway.
- true
- false
Explanation: The correct answer is true. A host will use the destination MAC address of the default gateway for any packets that are destined for different networks.
3. A default route is the interface through which the router forwards:
- all packets
- any packet when a host does not receive an ARP Reply
- a packet containing a source IP network address that is not in the routing table of the router
- a packet containing a destination IP network address that is not in the routing table of the router
Explanation: If a router does not have a route to a destination network, it uses the default router.
4. A host will send a packet to the default gateway when:
- the source IP address is on a different network
- the destination IP address is on a different network
- it does not receive an ARP Reply
- all packets
Explanation: A host sends packets destined for a different network to the default gateway.