Networking Chapter 4-7 Exam (1)

Networking Chapter 4-7 Exam
Two methods for switching data between ports on a switch? - CORRECT
ANSWER-Cut-Through switching

Store-and Forward Switching

True or false? The physical layer is only concerned with wired network connections. -
CORRECT ANSWER-False

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

The physical layer of the receiving device passes bits up to which higher level layer?
- CORRECT ANSWER-Data Link

What PDU is received by the physical layer for encoding and transmission? -
CORRECT ANSWER-Frame

Which media uses patterns of microwaves to represent bits? - CORRECT
ANSWER-Wireless

Which media uses patterns of light to represent bits? - CORRECT
ANSWER-Fiber-Optic

Which media uses electrical pulses to represent bits? - CORRECT
ANSWER-Copper

What is the name for the capacity of a medium to carry data? - CORRECT
ANSWER-Bandwidth

A measure of the transfer of bits across the media? - CORRECT
ANSWER-Throughput

What type of copper media attaches antennas to wireless devices? It can also be
bundled with fiber-optic cabling for two-way data transmission. - CORRECT
ANSWER-Coaxial

What type of copper media counters EMI and RFI by using shielding techniques and
special connectors? - CORRECT ANSWER-STP

What is the most common network media? - CORRECT ANSWER-UTP

, What type of copper media terminates with BNC, N type and F type connectors? -
CORRECT ANSWER-Coaxial

Fiber-optic cable types can help data travel approximately 1.24 miles or 2
km/2000m? - CORRECT ANSWER-Multimode

Fiber-optic cable types use light emitting diodes (LEDs) as a data light source
transmitter? - CORRECT ANSWER-Multimode

Fiber-optic cable types use lasers in a single stream as a data light source
transmitter? - CORRECT ANSWER-Single-Mode

Fiber-optic cable types is used to connect long-distance telephony and cable TV
applications? - CORRECT ANSWER-Single-Mode

Fiber-optic cable types can travel approximately 62.5 miles or 100 km/100000 m? -
CORRECT ANSWER-Single-Mode

Fiber-optic cable types is used within a campus network? - CORRECT
ANSWER-Multimode

True or false. Wireless is not well suited for enterprise networks. - CORRECT
ANSWER-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.
- CORRECT ANSWER-False

Which of the following wireless standards is best suited for industrial and IoT
environments? - CORRECT ANSWER-Zigbee

Which of the following wireless standards is used for Personal Area Networks
(PANs) and allows devices to communicate over distances of 1 to 100 meters? -
CORRECT ANSWER-Bluetooth

What is the purpose of the OSI physical layer? - CORRECT ANSWER-Transmitting
bits across the local media

Why are two strands of fiber used for a single fiber optic connection? - CORRECT
ANSWER-They allow for full-duplex connectivity.

Which characteristic describes crosstalk? - CORRECT ANSWER-The distortion of
the transmitted messages from signals carried in adjacent wireless