OSI - part 1

An ICMP ping message is sent at the application layer of the OSI model.

• network

• transport

• data link

• no change is needed

The protocol that maps IP addresses to a Media Access Control (MAC) address is Domain name system

• Address Resolution Protocol (ARP)

• Dynamic Host Configuration Protocol (DHCP)

• Routing Information Protocol (RIP)

• No change IS needed.

In which OSI layer does routing occur

• Transport

• Network

• Datalink

• physical

What is the purpose of a Media Access Control (MAC) address?

• provide a routing address on a local area network (LAN)

• manage permissions for shared network resources

• identify a network device to the Internet

• uniquely identify a physical network device

An Ethernet 1000BaseT network is wired as a physical star using switches. What is the logical topology?

• Ring

• bus

• Star

• Mesh

One reason to incorporate VLANs in a network is to:

• reduce the number of nodes in a broadcast domain

• reduce the number Of broadcast domains

• increase the number Of available IP addresses

• increase the number of available Media Access Control (MAC) addresses

One reason to replace an unmanaged switch with a managed switch is to:

• Manage the routing tables

• Support multiple VLANS.

• Reduce collision domains.

• Route between networks