IP Control/Helper Protocols Flashcards
1
Q
Define address mapping…
A
Delivery of a packet to a host or a router, requires 2 level of addressing (IP and MAC).
2
Q
Define Address Resolution Protocol (ARP)…
A
- Performs the mapping
- Confined to single hop LAN
3
Q
List the two operations of ARP…
A
- Request: broadcast from requester
- Reply: unicast from responder
4
Q
What is the ethernet value of an ARP packet?
A
0x0806.
5
Q
What is Internet Control Message Protocol (ICMP) used for?
A
Control messaging and error reporting.
6
Q
What layer is Internet Control Message Protocol (ICMP) apart of?
A
Layer 3.
7
Q
Where is Internet Control Message Protocol (ICMP) found?
A
Encapsulated within IP packet.
8
Q
What uses ICMP?
A
Routers and hosts.
