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14 Cards in this Set

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  • Back

Question 1True or false? Devices can only transmit on an Ethernet network when it is free and the opportunity to transmit becomes less frequent as more devices are added. Also the probability of collisions increases. These problems can be overcome by installing a hub.

False. The description of the problem is true but the solution isn't (use a switch).

Question textTrue or false? A bridge does not forward broadcast or multicast traffic.

False. Ports on a bridge are in the same broadcast domain.

Question textHow does a switch keep track of the hardware addresses of hosts connected to its ports?

It uses a table stored in Content Addressable Memory (CAM).

Question textWhat is happening if a switch is flooding?

It is sending frames out on all ports. This typically happens when it is learning MAC addresses.

Question textWhat is a virtual terminal?

Configuring a management IP address on a switch to connect to its command line interface over the network (rather than via a serial port).

Question textWhy might an enterprise use an AAA configuration to allow administrators to log on to a switch's management interface?

An Authentication, Authorization, and Accounting (AAA) server centralizes the credentials used for administrative accounts, storing them on a central server rather than configuring them on each appliance. This is more secure and more manageable.

Question textA server is equipped with 4 Ethernet interfaces and you want to aggregate them to a single interface. What feature must the switch support?

Port bonding / Link Aggregation Control Protocol (LACP [IEEE 802.3ad / 802.1ax])

Question textThe accounting department is overloading the network with a high volume of broadcast traffic, causing the entire network to slow down. What could you install to isolate that department?

VLAN (switch) or router.

Question textWhat methods can be used to allocate a particular host to a VLAN?

The simplest is by connection port but this can also be configured by MAC address, IP address, or user authentication.

Question textWhen connecting an ordinary client workstation to a switch and assigning it to a VLAN, should the switch port be tagged or untagged?

Untagged - this means the switch handles VLAN assignment.

Question textWhat is a trunk port?

A port used to connect switches. This allows hosts connected to different switches to communicate and to configure VLANs across multiple switches.

Question textWhat is the function of STP?

Spanning Tree Protocol prevents switching loops (where broadcast traffic is continually looped around a switched network with redundant links between switches).

Question textUnder STP, if a host port is working as normal, what state is it in?


Question textWhat is PoE?

Power over Ethernet - an IEEE specification for delivering power to devices from switch ports over network cabling.