Module 4

rollover

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

zigbee

What wireless standard is best suited for industrial and IoT environments?

bluetooth

What wireless standard is used for Personal Area Networks (PANs) and allows devices to communicate over distances of 1 to 100 meters?

the end-user device needs mobility when connecting to the network

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

physical layer

A network administrator is troubleshooting connectivity issues on a server. Using a meter, 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?

the microwave

A wireless LAN is being deployed inside the new one room office that is occupied by the park ranger. The office is located at the highest part of the national park. After network testing is complete, the technicians report that the wireless LAN signal is occasionally affected by some type of interference. What is a possible cause of the signal distortion?

bandwidth

The capacity of a medium to carry data is?

throughput

The measure of transfer of bits across the media is called what?

UTP

The most common network media?

data link

The physical layer of the receiving device passes bits up to which higher level layer?

STP

This counters EMI and RFI by using shielding techniques and special connectors?

False

True or false? The physical layer is only concerned with wired network connections?

False

True or false? When a frame is encoded by the physical layer, all bits are sent over the media at the same time?

false

True or false? Wireless LANs operate in full-duplex allowing all devices to send or receive data at the same time so the number of users does not impact performance?

false

True or false? Wireless is not well suited for enterprise networks?

frame

What PDU is received by the physical layer for encoding and transmission?

coaxial

What attaches antennas to wireless devices? It can also be bundled with fiber-optic cabling for two-way data transmission?

the distortion of the transmitted messages from signals carried in adjacent wires

What characteristic describes crosstalk?

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

What correctly describes frame encoding?

multimode

What fiber-optic cable type can help data travel approximately 500 meters?

single-mode

What fiber-optic cable type can travel approximately 100 km?

single-mode

What fiber-optic cable type is used to connect long-distance telephony and cable TV applications?

multimode

What fiber-optic cable type is used within a campus network?

single-mode

What fiber-optic cable type uses lasers in a single stream as a data light source transmitter?

cancellation

What is a characteristic of UTP cabling?

it is able to carry signals much further than copper cabling

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

the measure of the bits transferred across the media over a given period of time

What is indicated by the term throughput?

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

What is the definition of bandwidth?

transmitting bits across the local media

What is the purpose of the OSI physical layer?

copper

What media uses electrical pulses to represent bits?

fiber-optic

What media uses patterns of light to represent bits?

wireless

What media uses patterns of microwaves to represent bits?

twisting opposing circuit wire pairs together

What procedure is used to reduce the effect of crosstalk in copper cables?

multimode

Which of the following fiber-optic cable types use light emitting diodes (LEDs) as a data light source transmitter?

coaxial

Which of the following terminates with BNC, N type and F type connectors?

IEEE

Which standards organization oversees development of wireless LAN standards?

straight-through

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

they allow for full-duplex connectivity

Why are two strands of fiber used for a single fiber optic connection?