Communication Systems and Networks MCQs
Communication Systems and Networks MCQs
These Communication Systems and Networks multiple-choice questions and their answers will help you strengthen your grip on the subject of Communication Systems and Networks. You can prepare for an upcoming exam or job interview with these Communication Systems and Networks MCQs.
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1: Why is it difficult to precisely transmit analog signals?
A. They must be transmitted all the way to the target exactly as produced.
B. They require filters and shields to be implemented.
C. They are often represented as a sine wave.
D. They are susceptible to attenuation and external noise influence.
2: What does an antenna do?
A. Controls the radio waves
B. Stores radio waves
C. Converts between radio waves and electrical current
D. Increases radio waves
3: What does AS stand for in networking?
A. Autonomous System
B. Amplitude Shift
C. Automatic Switching
D. Analog Signal
4: What is ASCII?
A. American Standard Code for Information Interchange
B. American Standard Code for Internal Interchange
C. Assigned Standard Code for Information Interchange
D. American Standard Code for Impacts and Interchanges
5: What is an ASIC?
A. A computer chip designed for a specific use
B. A field-programmable gate array
C. A programmable logic device
D. A microprocessor
6: What is asynchronous communication?
A. A data communication method between two devices that is achieved without using a common data signal.
B. A data communication method between two devices that is achieved without using a common clock signal.
C. A data communication method between two devices that is achieved using a common clock signal.
D. Data communication method that uses a common clock signal.
7: What is the main advantage of asynchronous communication?
A. The ability to transmit data using a common clock signal.
B. The ability to transmit data without using a common clock signal.
C. The ability to periods of no communication at all.
D. The ability to vary the rate of bit transmission.
8: Attenuation _____.
A. Only results from natural resistance in the wired or wireless channel
B. Is often measured in decibels (dB)
C. Results from natural resistance in the wired or wireless channel and from other environmental factors.
D. Is the loss of signal strength along a communications pathway
9: Attenuation is often measured in which unit?
A. Megabytes (MB)
B. Kilometers (km)
C. Decibels (dB)
D. Gigabytes (GB)
10: What is a backbone?
A. A media pathway of higher capacity than those used to connect end devices to the network.
B. A device that offers connectivity to end devices in a star-wired infrastructure.
C. A device that connects end devices to a network.
D. A media pathway of lower capacity than those used to connect end devices to the network.
11: What does bandwidth refer to in communication?
A. The speed of the transmission
B. The size of the pipe
C. The amount of data sent
D. The channel occupied by the carrier
12: Which of the following is true about baseband?
A. Baseband is represented by
B. Baseband signaling is used in Ethernet networks.
C. Baseband uses multiple frequencies to transmit a bitstream.
D. Baseband is used in WiFi networks.
13: What is BGP?
A. The exterior gateway routing protocol used to build the routing table of the home internet.
B. The exterior gateway routing protocol used to build the routing table of the commercial internet.
C. The interior gateway routing protocol used to build the routing table of the commercial internet.
D. The interior gateway routing protocol used to build the routing table of the home internet.
14: Which of the following is not an exterior gateway protocol?
A. RIP
B. EGP
C. BGP4
D. BGP
15: What does the word "binary" mean?
A. Referring to a system with two separate components
B. Characterized by having two parts
C. Only consisting of the numbers 1 and 2
D. Having one correct answer
16: What is a binary system?
A. A system that has two separate components
B. A system that has four separate components
C. A system that has three separate components
D. A system that has one separate component
17: What is the binary numbering system?
A. A system that uses ten digits, 0 through 9
B. A system that uses eight digits, 0 through 7
C. A system that uses sixteen digits, 0 through F
D. A system that uses two digits, 0 and 1
18: What is the unit of measure for the movement of data between devices and/or across a medium?
A. Samples per second (s/s or sps)
B. Bits per second (b/s or bps)
C. Hertz (Hz)
D. Frames per second (f/s or fps)
19: Data transmission speed is measured in ____.
A. Bits per second
B. Gigabytes
C. Miles per hour
D. Seconds
20: BIOS is responsible for which of the following?
A. Booting from a USB drive
B. Updating the graphics driver
C. Formatting the hard drive
D. Orchestrating hardware registration during bootup
21: What does a bridge do in Ethernet?
A. Block data
B. Bridge interconnects separate network cable segments.
C. Manages MAC addresses
D. Forwards data
22: What advantage did bridges have over repeaters?
A. The ability to forward data and block data that is not meant for a different segment.
B. Bridges could not control the flow of data.
C. Bridges could not understand MAC addresses
D. Bridges could not process data
23: What is the purpose of a data buffer?
A. To reduce the loss of data or the variation in the rate of data transmission
B. To communicate data
C. To process data
D. To store data
24: How many bits are in a byte?
A. 64
B. 8
C. 16
D. 4
25: What is cable modem?
A. A device that connects a computer to the Internet
B. A device that modulates an analog carrier signal to encode digital information
C. A type of computer network
D. The customer premise equipment (CPE) used to send and receive internet traffic over a coaxial cable television circuit.
26: What is the full form of CSU/DSU?
A. Channel Switching Unit/Data Service Unit
B. Channel Service Unit/Data Service Unit
C. Customer Service Unit/Data Service Unit
D. Continuous Service Unit/Data Service Unit
27: What is the most common accompaniment to the CLI?
A. Command Line Interface (CLI)
B. Text-based user interface (TUI)
C. Alphabetical user interface (AUI)
D. Graphical user interface (GUI)
28: What is a common form of copper cabling characterized by two conductors, one inside the other?
A. Twisted pair cable
B. Fiber optic cable
C. Coaxial cable
D. Parallel cable
29: What is the common axis of rotation for the inner and outer conductors in a coaxial cable?
A. The inner conductor
B. The braided shield
C. The core of the cable
D. The outer conductor
30: Lossless compression is ideal for which type of data?
A. Lossy data
B. Data that can be misinterpreted
C. Data that must not be misinterpreted
D. Data that does not need to be compressed
31: What is the reduction of the amount of data that is transmitted or stored called?
A. Compression
B. Encryption
C. Transmission
D. Decompression
32: What is the commonest type of console?
A. A device that only consists of a keyboard and a mouse.
B. A device that only consists of a keyboard.
C. A terminal which is a combination of a keyboard, a mouse and a monitor.
D. A device that only consists of a monitor.
33: What is the term "console type" often used to refer to?
A. The type of console, such as Xbox, PlayStation, or Nintendo
B. The act of entering data into a computer
C. The process of connecting a computer to a console
D. The terminal type, such as VT-100, set in terminal emulation software
34: What is another term for data processing?
A. Data analysis
B. Data entry
C. Data output
D. Big data
35: What is the primary function of DNS?
A. Enabling two devices to communicate with each other
B. Resolving fully-qualified domain names (FQDNs) to IP addresses.
C. Storing information about domain names
D. Translating websites from one language to another
36: What does a driver do?
A. It allows an operating system to use a piece of hardware by providing logical control.
B. It provides a graphical interface for the user.
C. It deletes temporary files.
D. It manages memory and processes.
37: Which of the following is responsible for physical control of the interfaces that lead to the hardware being controlled?
A. Hardware
B. Operating System
C. BIOS
D. Drivers
38: Drivers act as translators between which two things?
A. The operating system and the hardware
B. The CPU and the memory
C. The software and the drivers
D. The BIOS and the hardware
39: What is the full form of "DSL"?
A. Direct Subscriber Line
B. Dial Subscriber Line
C. Digital Subscriber Line
D. Dual Subscriber Line
40: What is DSL?
A. A satellite internet service
B. A broadband internet-access circuit based on a standard pair of phone wires
C. A cable internet service
D. A dial-up internet service
41: Which of the following is true about Ethernet?
A. It is a WAN technology
B. It is a Layer-4 protocol
C. It is a Layer-2 protocol
D. It is a Layer-3 protocol
42: What is the most common LAN technology in use today?
A. FDDI
B. ATM
C. Ethernet
D. Token Ring
43: What is the basic data unit of Layer-2?
A. Layer-1
B. Bit
C. Protocol Data Unit
D. Frame
44: Which port is used for transferring data in FTP?
A. 990
B. 21
C. 989
D. 20
45: What ports are used in FTP's insecure form?
A. 989 and 990
B. 20 and 21
C. 25 and 22
D. 110 and 995
46: What does FTP stand for?
A. Foreign Trade Policy
B. Federal Tax Provision
C. First Time Parents
D. File Transfer Protocol
47: Before the term router was settled upon, what were routers called?
A. Bridges
B. Hosts
C. Gateways
D. Converters
48: What is the "default gateway?"
A. The first router on the internet
B. The router at the edge of a network
C. A multi-layer protocol converter
D. The default router on a subnetwork
49: What is GPS?
A. Global Positioning System
B. Google Play Store
C. Gaming Platform System
D. Geocaching
50: What is GUI?
A. Graphic User Interaction
B. Graphical User Index
C. Graphical User Interface
D. Graphical User Interference
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