Computer Networks: Trivia Quiz
Computer networks are a major part of helping a computer when it comes to performing specific tasks. A computer network can be structured in different ways, and we got to cover all of them. Think that you know enough about networks to pass this quiz? Take it up and get to find out how much more you know about the computer networks.
Questions and Answers
- 1.
Which type of cable run is most often associated with fiber-optic cable?
- A.
Backbone cable
- B.
Horizontal cable
- C.
Patch cable
- D.
Work area cable
Correct Answer
A. Backbone cableExplanation
The correct answer is backbone cable. Backbone cable is the type of cable run that is most often associated with fiber-optic cable. Backbone cables are used to connect different areas within a building or between buildings, providing high-speed and long-distance communication. Fiber-optic cables are commonly used in backbone cable installations due to their ability to transmit large amounts of data over long distances with minimal loss of signal quality.Rate this question:
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- 2.
What is a primary role of the Physical layer in transmitting data on the network?
- A.
Create the signals that represent the bits in each frame on to the media
- B.
Provide physical addressing to the devices
- C.
Determine the path packets take through the network
- D.
Control data access to the media
Correct Answer
A. Create the signals that represent the bits in each frame on to the mediaExplanation
The primary role of the Physical layer in transmitting data on the network is to create the signals that represent the bits in each frame onto the media. This involves converting the digital data into a format that can be transmitted over the physical medium, such as electrical or optical signals. The Physical layer is responsible for encoding and decoding the data, as well as handling issues related to data transmission, such as signal strength, modulation, and synchronization. By creating the signals, the Physical layer ensures that the data can be effectively transmitted and received by the devices on the network.Rate this question:
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- 3.
Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?
- A.
Coax cable
- B.
Rollover cable
- C.
Crossover cable
- D.
Straight-through cable
Correct Answer
C. Crossover cableExplanation
A crossover cable is used to make an Ethernet connection between Host A and Host B. Unlike a straight-through cable, which is used to connect a host to a switch or hub, a crossover cable is specifically designed to connect two hosts directly to each other without the need for any intermediary device. This type of cable is wired in a way that the transmit and receive signals are crossed over, allowing the two hosts to communicate effectively.Rate this question:
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- 4.
What is considered a benefit of wireless as a media choice?
- A.
More host mobility
- B.
Lower security risks
- C.
Reduced susceptibility to interference
- D.
Less impact of the surroundings on the effective coverage area
Correct Answer
A. More host mobilityExplanation
Wireless as a media choice offers more host mobility, allowing devices to connect and communicate without being physically tethered to a fixed location. This flexibility enables users to move around freely while maintaining network connectivity, enhancing productivity and convenience. Unlike wired connections, wireless networks eliminate the need for cables, which can limit mobility. Therefore, more host mobility is considered a benefit of wireless media choice.Rate this question:
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- 5.
In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?
- A.
Coax
- B.
Fiber
- C.
Cat5e UTP
- D.
Cat6 UTP
- E.
STP
Correct Answer
B. FiberExplanation
In LAN installations where potential electrical hazards or electromagnetic interference may be present, fiber optic cable is recommended for backbone cabling. Fiber optic cables are immune to electromagnetic interference and do not conduct electricity, making them a safe and reliable option in such environments. Additionally, fiber optic cables have a high bandwidth capacity and can transmit data over long distances without degradation, making them suitable for backbone cabling.Rate this question:
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- 6.
In most business LANs, which connector is used with twisted-pair networking cable?
- A.
BNC
- B.
RJ-11
- C.
RJ-45
- D.
Type F
Correct Answer
C. RJ-45Explanation
In most business LANs, the RJ-45 connector is used with twisted-pair networking cable. The RJ-45 connector is a standard connector used for Ethernet connections and is compatible with twisted-pair cables commonly used in LAN environments. It provides a secure and reliable connection, making it the preferred choice for networking in business settings. BNC connectors are commonly used for coaxial cables, RJ-11 connectors are used for telephone cables, and Type F connectors are used for coaxial cables in television and satellite systems.Rate this question:
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- 7.
What is a possible effect of improperly applying a connector to a network cable?
- A.
Data will be forwarded to the wrong node.
- B.
Data transmitted through that cable may experience signal loss.
- C.
An improper signaling method will be implemented for data transmitted on that cable.
- D.
The encoding method for data sent on that cable will change to compensate for the improper connection.
Correct Answer
B. Data transmitted through that cable may experience signal loss.Explanation
Improperly applying a connector to a network cable can result in signal loss for the data transmitted through that cable. The connector ensures proper connection and continuity in the cable, allowing for efficient data transmission. If the connector is not properly applied, it can lead to a weak or unstable connection, causing signal loss. This can result in data packets being dropped or corrupted, leading to disruptions in the network communication.Rate this question:
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- 8.
When is a straight-through cable used in a network?
- A.
When connecting a router through the console port
- B.
When connecting one switch to another switch
- C.
When connecting a host to a switch
- D.
When connecting a router to another router
Correct Answer
C. When connecting a host to a switchExplanation
A straight-through cable is used when connecting a host to a switch. In this scenario, the host and the switch have different wiring configurations, so a straight-through cable is needed to ensure proper communication. This type of cable has the same pinout on both ends, allowing the transmit (TX) and receive (RX) signals to be correctly aligned between the host and the switch. Using a straight-through cable when connecting a router through the console port, one switch to another switch, or a router to another router would not work as the devices have the same wiring configuration and would require a crossover cable instead.Rate this question:
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- 9.
Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?
- A.
Presentation
- B.
Transport
- C.
Data Link
- D.
Physical
Correct Answer
D. PhysicalExplanation
The physical layer of the OSI model is responsible for binary transmission, cable specification, and the physical aspects of network communication. This layer deals with the actual transmission of bits over the network medium, including the electrical, mechanical, and functional specifications for the physical interface between devices. It defines the physical characteristics of the network such as cables, connectors, voltage levels, and signaling techniques used for data transmission.Rate this question:
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- 10.
An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?
- A.
Light injector
- B.
OTDR
- C.
TDR
- D.
Multimeter
Correct Answer
B. OTDRExplanation
An OTDR (Optical Time Domain Reflectometer) is a device used to test and analyze the performance of fiber optic cables. It sends out a pulse of light into the fiber and measures the reflections and losses along the cable. This allows it to detect faults, such as breaks or bends in the fiber, and assess the integrity and performance of the media. A light injector, TDR (Time Domain Reflectometer), and multimeter are not specifically designed for testing fiber optic cables and may not provide accurate or comprehensive results.Rate this question:
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- 11.
Which characteristics describe fiber optic cable? (Choose two.)
- A.
It is not affected by EMI or RFI.
- B.
Each pair of cables is wrapped in metallic foil.
- C.
It combines the technique of cancellation, shielding and twisting to protect data.
- D.
It has a maximum speed of 100 Mbps.
- E.
It is the most expensive type of LAN cabling.
Correct Answer(s)
A. It is not affected by EMI or RFI.
E. It is the most expensive type of LAN cabling.Explanation
Fiber optic cable is not affected by EMI or RFI because it uses light to transmit data, rather than electrical signals. This makes it immune to electromagnetic interference. Additionally, fiber optic cable is the most expensive type of LAN cabling due to the cost of the materials and the complex manufacturing process involved.Rate this question:
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- 12.
Which method of signal transmission uses radio waves to carry signals?
- A.
Electrical
- B.
Optical
- C.
Wireless
- D.
Acoustic
Correct Answer
C. WirelessExplanation
Wireless signal transmission uses radio waves to carry signals. Radio waves are a type of electromagnetic radiation that can be used to transmit information wirelessly. This method is commonly used for communication purposes, such as in radio and television broadcasting, Wi-Fi networks, and cellular communication. It allows for the transmission of signals over long distances without the need for physical wires or cables.Rate this question:
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- 13.
Which of the following is a characteristic of single-mode fiber-optic cable?
- A.
Generally uses LEDs as the light source
- B.
Relatively larger core with multiple light paths
- C.
Less expensive than multimode
- D.
Generally uses lasers as the light source
Correct Answer
D. Generally uses lasers as the light sourceExplanation
Single-mode fiber-optic cable typically uses lasers as the light source. This is because lasers emit a narrow beam of light that can travel long distances without significant loss or dispersion. Single-mode fiber-optic cable has a smaller core compared to multimode, allowing only one light path to propagate. This characteristic enables higher bandwidth and longer transmission distances. Additionally, lasers provide higher data rates and better signal quality, making them suitable for applications that require high-speed and long-distance communication.Rate this question:
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- 14.
What are three measures of data transfer? (Choose three.)
- A.
Goodput
- B.
Frequency
- C.
Amplitude
- D.
Throughput
- E.
Bandwidth
Correct Answer(s)
A. Goodput
D. Throughput
E. BandwidthExplanation
Goodput, throughput, and bandwidth are three measures of data transfer. Goodput refers to the actual useful data transferred over a network, excluding any protocol overhead. Throughput is the rate at which data is successfully transmitted from source to destination. Bandwidth is the maximum capacity of a network to transmit data. These three measures are important in assessing the efficiency and performance of a network.Rate this question:
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- 15.
With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
- A.
The magnetic field around the adjacent pairs of wire
- B.
The use of braided wire to shield the adjacent wire pairs
- C.
The reflection of the electrical wave back from the far end of the cable
- D.
The collision caused by two nodes trying to use the media simultaneously
Correct Answer
A. The magnetic field around the adjacent pairs of wireExplanation
Crosstalk in unshielded twisted-pair copper wire networks is caused by the magnetic field around the adjacent pairs of wire. When data is transmitted through one pair of wires, the magnetic field generated can interfere with the adjacent pairs, leading to signal degradation and cross-interference. This is why proper cable management and separation of wire pairs is crucial to minimize crosstalk and maintain signal integrity.Rate this question:
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- 16.
With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
- A.
The magnetic field around the adjacent pairs of wire
- B.
The use of braided wire to shield the adjacent wire pairs
- C.
The reflection of the electrical wave back from the far end of the cable
- D.
The collision caused by two nodes trying to use the media simultaneously
Correct Answer
A. The magnetic field around the adjacent pairs of wireExplanation
Crosstalk in unshielded twisted-pair copper wire occurs due to the magnetic field generated by the adjacent pairs of wire. When data is transmitted through one pair of wire, it creates a magnetic field that can interfere with the adjacent pairs, causing signal degradation and cross-interference. This phenomenon is known as crosstalk. Shielding the adjacent wire pairs with braided wire would help reduce crosstalk, but in this case, the question specifically asks about the cause of crosstalk, which is the magnetic field. The reflection of the electrical wave and collision caused by two nodes using the media simultaneously are not related to crosstalk in this context.Rate this question:
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- 17.
Which fiber connector supports full duplex Ethernet?opt1opt2opt3opt4
- A.
Opt1
- B.
Opt2
- C.
Opt3
- D.
Opt4
Correct Answer
C. Opt3Explanation
The correct answer is opt3. Opt3 refers to the fiber connector that supports full duplex Ethernet. Full duplex Ethernet allows for simultaneous communication in both directions, enabling data to be sent and received simultaneously. This is important for high-speed and efficient data transmission in networking environments.Rate this question:
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- 18.
What characteristic of UTP cable helps reduce the effects of interference?
- A.
The metal braiding in the shielding
- B.
# the reflective cladding around core
- C.
The twisting of the wires in the cable
- D.
The insulating material in the outer jacket
Correct Answer
C. The twisting of the wires in the cableExplanation
The twisting of the wires in the cable helps reduce the effects of interference. Twisting the wires creates a balanced transmission line, which helps cancel out electromagnetic interference (EMI) and radio frequency interference (RFI). This twisting technique helps to minimize signal degradation and maintain a high-quality signal transmission.Rate this question:
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