NST Chp 3b

Which one of the following is not a layer of the hierarchical network design model?

• Core.

• Access.

• Transport.

• Distribution.

A ______ uses MAC addresses to forward data.

• Hub.

• Switch.

• Router.

• Repeater.

A router is a device that connects ______ .

• to an isolated network only.

• to a single local network only.

• to a single remote network only.

• a local network with a remote network.

An Ethernet hub simply accepts electronic signals from one port and regenerates the same message out of all other ports.

• True.

• False.

It is possible for two or more hosts connected to an Ethernet hub to attempt to send a message at the same time. When this happens, it will result in a ______ .

• Flood.

• Collision.

• Throughput.

• Regeneration.

Within a local network, it is often necessary for one host to be able to send messages to all other hosts at the same time. This can be possible with the use of a message known as a ______.

• MAC.

• Batch.

• Broadcast.

• Distribution.

MAC address is represented in hexadecimal notations that comprises of a ______ bit address made up of all ones.

• 8.

• 16.

• 24.

• 48.

Refer to above graphic. If H1 on switch A needs to forward a frame to H3 on switch B, which MAC address is used as the destination MAC within the frame?

• MAC address of H1.

• MAC address of switch A.

• MAC address of switch B.

• MAC address of H3.

Which one of the following devices should a network engineer use to establish network connectivity between a Singapore and Japan office?

• Hub.

• Switch.

• Router.

• Repeater.

The ______ layer provides a connection point for end user devices to the network and allows multiple hosts to connect to other hosts through a network device.

• ARP.

• Access.

• Network.

• Transport.