OS Jarkom - Quiz

Which standards organization oversees development of wireless LAN standards?

• IEEE

• OSI

• TIA

• IOS

A network administrator is designing a new network infrastructure that includes both wired and wireless connectivity. Under which situation would a wireless connection be recommended?

• The end-user device needs mobility when connecting to the network.

• The end-user device only has an Ethernet NIC.

• The end-user device requires a dedicated connection because of performance requirements.

• The end-user device area has a high concentration of RFI.

A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?

• physical layer

• presentation layer

• transport layer

• session layer

What type of cable is used to connect a workstation serial port to a Cisco router console port?

• rollover

• crossover

• straight-through

• coaxial

Which type of UTP cable is used to connect a PC to a switch port?

• straight-through

• console

• rollover

• crossover

What is the definition of bandwidth?

• the amount of data that can flow from one place to another in a given amount of time

• the measure of the transfer of bits across the media over a given period of time

• the speed at which bits travel on the network

• the measure of usable data transferred over a given period of time

Which statement correctly describes frame encoding?

• It converts bits into a predefined code in order to provide a predictable pattern to help distinguish data bits from control bits.

• It uses the characteristic of one wave to modify another wave.

• It transmits data signals along with a clock signal which occurs at evenly spaced time durations.

• It generates the electrical, optical, or wireless signals that represent the binary numbers of the frame.

What is one advantage of using fiber optic cabling rather than copper cabling?

• It is usually cheaper than copper cabling.

• It is able to be installed around sharp bends.

• It is easier to terminate and install than copper cabling.

• It is able to carry signals much farther than copper cabling.

A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)

• the amount of traffic that is currently crossing the network

• the sophistication of the encapsulation method applied to the data

• the type of traffic that is crossing the network

• the latency that is created by the number of network devices that the data is crossing

• the bandwidth of the WAN connection to the Internet the

What are two characteristics of fiber-optic cable? (Choose two.)

• It is not affected by EMI or RFI.

• Each pair of cables is wrapped in metallic foil.

• It combines the technique of cancellation, shielding, and twisting to protect data.

• It typically contains 4 pairs of fiber-optic wires.

• It is more expensive than UTP cabling is.