Module 5

Question 1

OUI

Answer 1

OUI - Organizationally unique identifier

a 24-bit number that uniquely identifies a vendor, manufacturer, or other organization.

Question 2

ICMP

Answer 2

Internet Control Message Protocol
supporting protocol in the Internet protocol suite.
It is used by network devices, including routers, to send error messages and operational information indicating success or failure when communicating with another IP address

Question 3

ARP

Answer 3

Address Resolution Protocol
communication protocol used for discovering the link layer address, such as a MAC address, associated with a given internet layer address, typically an IPv4 address.

Question 4

Purpose of the Data Link Layer

Answer 4

• The Data Link layer is responsible for
communications between end-device
network interface cards.
• It allows upper layer protocols to access
the physical layer media and
encapsulates Layer 3 packets (IPv4
and IPv6) into Layer 2 Frames.
• It also performs error detection and
rejects corrupts frames.