CSEC Data Communications And Networking: Quiz!
CSEC (Communications Security Establishment Canada) is a cryptologic agency set up in 1946, controlled by the Department of National Defence (DND). It's accountable for protecting Canadian electronic information and communication networks. This quiz has been developed to test your knowledge about CSEC basic networking concepts.
Questions and Answers
- 1.
Which of the following are types of computer networks?
- A.
LAN, NAN, WAN
- B.
WAN, ring, star, bus
- C.
Old boys' network, old girls' network, business associates
- D.
Extranet, intranet, LAN, WAN
Correct Answer
D. Extranet, intranet, LAN, WANExplanation
Extranet, intranet, LAN, and WAN are all types of computer networks. An extranet is a private network that allows access to specific external users, such as suppliers or customers. An intranet is a private network that is only accessible to an organization's internal users. LAN stands for Local Area Network, which is a network that connects devices within a limited area, such as a home or office. WAN stands for Wide Area Network, which is a network that connects devices over a large geographical area, such as multiple offices or cities.Rate this question:
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- 2.
Which of the following is the best description of the transmission directions possible in a network?
- A.
Simplex, half-duplex, full duplex
- B.
Simplex, half-duplex, full duplex, duplex
- C.
Half duplex, 2/3 duplex, full duplex
- D.
Duplex, half duplex, 1/4 duplex
Correct Answer
A. Simplex, half-duplex, full duplexExplanation
The best description of the transmission directions possible in a network includes simplex, half-duplex, and full duplex. Simplex refers to a one-way communication where data can only be transmitted in one direction. Half-duplex allows for two-way communication, but only one direction at a time. Full duplex enables simultaneous two-way communication, allowing data to be transmitted in both directions at the same time.Rate this question:
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- 3.
Which of the following is NOT a list of network topologies?
- A.
Star, bus, ring
- B.
Star, ring, hybrid
- C.
Bus, ring, double ring, hexagon
- D.
Ring, mesh, star, bus,
Correct Answer
C. Bus, ring, double ring, hexagonExplanation
The correct answer is "bus, ring, double ring, hexagon". This is because bus and ring are both examples of network topologies, while double ring and hexagon are not commonly recognized network topologies. A bus topology is a linear network where all devices are connected to a single cable, while a ring topology is a circular network where each device is connected to two neighboring devices forming a closed loop. Double ring and hexagon are not standard network topologies and are not commonly used in networking.Rate this question:
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- 4.
Which network topology has a central device which brings all the signals together?
- A.
Bus
- B.
Star
- C.
Ring
- D.
Hybrid
Correct Answer
B. StarExplanation
A star network topology has a central device, usually a switch or hub, which brings all the signals together. In this topology, all devices are connected directly to the central device, forming a star-like structure. This central device acts as a central point of control and communication for all connected devices, allowing them to communicate with each other through the central hub.Rate this question:
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- 5.
Which network topology requires terminators at the ends of the lines?
- A.
Ring
- B.
Bus
- C.
Star
- D.
Mesh
Correct Answer
B. BusExplanation
The correct answer is bus. In a bus network topology, all devices are connected to a single backbone cable. The terminators are required at the ends of the lines to prevent signal reflection and ensure that the signal travels in only one direction. Without terminators, the signal would bounce back and forth, causing interference and communication issues.Rate this question:
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- 6.
A blank is a number of computers linked together to allow them to share data and/or other resources.
Correct Answer
computer network, networkExplanation
A computer network or simply a network is a collection of computers that are interconnected to enable them to share data and resources. This allows multiple computers to communicate with each other and share information, files, printers, and other devices. By connecting computers in a network, users can access shared resources and collaborate more efficiently.Rate this question:
- 7.
All communication systems must have a sender, a receiver, and a blank.
Correct Answer
communication channel, channel, communication medium, transmission mediumExplanation
All communication systems require a sender to transmit information, a receiver to receive the information, and a communication channel or medium through which the information is transmitted. The terms "communication channel" and "channel" are used interchangeably to refer to the pathway through which the information travels. Similarly, "communication medium" and "transmission medium" are also used interchangeably to describe the means by which the information is transmitted, such as wires, cables, or airwaves.Rate this question:
- 8.
What is being described here -> pairs of copper wires twisted around each other?
Correct Answer
twisted pair cable, utp cable, stp cable, twisted pair wireExplanation
The description refers to a type of cable where pairs of copper wires are twisted around each other. This type of cable is commonly known as twisted pair cable, UTP cable, STP cable, or twisted pair wire.Rate this question:
- 9.
This cable uses light to transmit data instead of magnetic signals.
Correct Answer
fibre optic cable, fibre optics , fibre, fibre cable, fibre optics cableExplanation
This cable, known as a fiber optic cable, utilizes light to transmit information instead of relying on magnetic signals. The use of light allows for faster and more efficient data transmission, making it an ideal choice for high-speed internet connections and long-distance communication. The cable is made up of thin strands of glass or plastic, known as fibers, which carry the light signals over long distances. The term "fiber optics" is often used interchangeably with "fiber optic cable" to refer to this technology.Rate this question:
- 10.
A blank converts digital signals to analog signals and also analog signals to digital signals.
Correct Answer
modemExplanation
A modem is a device that converts digital signals from a computer or other digital device into analog signals that can be transmitted over telephone lines. It also converts analog signals received from the telephone lines back into digital signals that can be understood by the computer or digital device. This allows for the transmission of data over telephone lines, enabling internet connectivity and communication between digital devices.Rate this question:
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