Networking III/IV Chapter 5 Test Review

Upon conducting a visual inspection of the server room, you see that a switch displays LED collision lights that are continually lit. You check the LED on the corresponding workstation and see that it is flashing rapidly even though it is not sending or receiving network traffic at that time.

What is the cause of the network collisions?

• Incorrect duplex settings

• Adapter controller card failure

• Faulty network card

• Faulty switch

Which of the following is true about half-duplex mode?

• Collision detection is turned off.

• Collision detection is turned on.

• The device can send and receive at the same time.

• It requires switches with dedicated switch ports.

Answer explanation

REMEMBER: Half-Duplex means that data can only be sent OR received at any given time. An Ethernet device using half-duplex mode will first check to see if anything else is transmitting before trying to send to avoid collisions.

You are moving a client to a new location within an Ethernet network. Previous to the move, the client system did not have difficulty accessing the network.

During the relocation, you attach patch cables from the client system to the wall jack and from the patch panel to the switch. Once connected, you do not get a link light on the network card or the switch. You swap out the cable running between the patch panel and the switch with a known good one, but you still cannot connect.

Which of the following might you suspect is the problem?

• Server software configuration error

• Failed network card

• Failed switch

• Failed patch cable between the client system and the wall jack

• Incorrect duplex settings

You need to transfer data from one laptop to another, and you would like to use an Ethernet cable. You do not have a hub or a switch. Which type of cable should you use?

• Crossover

• Loopback

• Straight-through

• Rollover

Which of the following physical topologies are used with Ethernet networks? (Select two.)

• Token

• Ring

• Bus

• Star

• Mesh

You need to connect a workstation to a switch using a regular port on the switch (not an uplink port). The switch does not support auto-MDI. Which type of cable should you use?

• Loopback

• Straight-through

• Rollover

• Crossover

During a network infrastructure upgrade, you replaced two 10 Mbps hubs with switches and upgraded from a Category 3 UTP cable to a Category 5e. During the process, you accidentally cut the Cat 5e patch cable that stretches from the network printer to the upgraded switch.

What is the impact on your network?

• All network nodes authenticated by the same server as the printer will be unavailable.

• ll network nodes, including the printer, will be available

• All network nodes except the printer will be available.

• All network nodes connected to the switch will be unavailable.

• All network nodes on the same subnet as the printer will be unavailable.

You are implementing a SOHO network for a local business. The ISP has already installed and connected a cable modem for the business. The business has four computers that need to communicate with each other and the internet. The ISP's cable modem has only one RJ45 port. You need to set up the network within the following parameters:

• You must spend as little money as possible.

• You must not purchase unnecessary equipment.

Computers need to have a gigabit connection to the network.

New devices should not require management or configuration.

You examine each computer and notice that only one of the four computers has a wireless NIC. They all have Ethernet NICs.

What should you purchase?

• A wireless AP and three new wireless NICs.

• A managed switch and CAT 6 cabling.

• A hub and CAT 5e cabling.

• An unmanaged switch and CAT 5e cabling.

• A new cable modem with a built-in switch and CAT 6a cabling.

You have a network that's connected using a full physical mesh topology. The link between Device A and Device B is broken.

Which of the following BEST describes the effect that this will have on network communications?

• Device A will be able to communicate with all other devices.

• No devices will be able to communicate with any other device.

• Device A will not be able to communicate with any other device.

• Device A will be able to communicate with any device except for Device B.

Answer explanation

Even though the direct connection between Device A and Device B is broken, there is still a path data can follow to send data between these two devices.

"With a mesh topology, a break in a single link has no effect on communications. Data can be routed to the destination device by taking a different (sometimes longer) path through the mesh topology."

You want to implement an Ethernet network at very long distances using fiber optic cables. Which standard and cable type would you choose? (Select two.)

• 1000BaseLX

• 1000BaseSX

• Single-mode fiber

• 1000BaseCX

• Mutimode fiber

Answer explanation

"BaseLX" cabling and Single-mode fiber support better speeds at longer distances.

Multimode fiber is better for sending multiple streams of data over shorter distances.