CSN6224 Quiz1

Which of the following is NOT a component of data communication?

• Message

• Scanner

• Sender

• Transmission Medium

What is the function of the OSI model?

• To standardize networking protocols

• To assign IP addresses

• To physically connect devices

• To store data on the cloud

Which of the following is a type of guided media?

• Radio waves

• Microwaves

• Infrared

• Twisted-pair cable

The unique identifier assigned to each device on a network is called a:

• Port Number

• IP Address

• MAC address

• IPv6

Which of the following is NOT an advantage of using a Star Topology in a computer network?

• It is easy to troubleshoot individual devices.

• Network fail when one of the connection fail

• Easy to install and reconfigure

• Less expensive than mesh topology

Which of the following are correct categories of computer networks?

A. LAN (Local Area Network)
B. WAN (Wide Area Network)
C. CAN (Controller Area Network)
D. PAN (Personal Area Network)

• A only

• A & B

• A, B & D

• All are correct

Which of the following correctly lists the ISO OSI layers from Application to Physical layer?

• Application, Session, Transport, Presentation, Network, Data Link, Physical

• Physical, Data Link, Network, Transport, Session, Presentation, Application

• Transport, Session, Network, Presentation, Application, Data Link, Physical

• Application, Presentation, Session, Transport, Network, Data Link, Physical

Which of the following is NOT a common cause of signal impairment in guided media?

• Compression

• Noise

• Distortion

• Attenuation

Which of the following is NOT TRUE according to Nyquist's Sampling Theorem for a noiseless channel?

• The sampling rate must be at least twice the signal's highest frequency

• The theorem applies only to noisy signals

• The signal can be perfectly reconstructed if sampled above the Nyquist rate

• A signal with bandwidth B Hz requires a sampling rate of at least 2B

What does attenuation refer to in data communication?

• The increase in signal strength over long distances.

• The interference caused by external electromagnetic waves.

• The increase in bandwidth of a transmission medium.

• The reduction in signal strength as it travels through a medium.