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Unit Viii Information And Communication Technology (Ict)
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Network Devices – Quiz 26
Network Devices Quiz 26 (7 MCQs)
This set of multiple-choice questions evaluates knowledge of network cable installation, including RJ45 connector attachment and cable termination. It also tests understanding of network device functions such as routers, switches, and modems, as well as data packet management, IP routing, and the data link layer. Concepts like signal reflection, data interference, and modulation are also covered.
Quiz Instructions
Select an option to see the correct answer instantly.
1.
Which of the following performs modulation and demodulation?
A) Router.
B) Fiber Optic.
C) Modem.
D) Transmitter.
Show Answer
Correct Answer:
Correct answer is: (C) Modem.
Exam Relevance:
CCNA, CompTIA Network+, Network Fundamentals
Difficulty:
Easy
Concept notes:
A modem is a device that performs modulation and demodulation to enable data transmission over analog communication channels.
Common Mistakes:
A common misunderstanding is that other network devices like routers or transmitters perform modulation and demodulation, but these devices have different primary functions.
Explanations:
A modem converts digital data into analog signals for transmission over analog communication channels, such as telephone lines. It also converts received analog signals back into digital data. This process is known as modulation and demodulation, respectively.
Option Analysis:
Option A:
A router is a device that directs data traffic between different networks but does not perform modulation and demodulation.
Option B:
Fiber Optic is a medium for transmitting data using light signals, but it does not perform modulation and demodulation.
Option C:
A modem performs modulation and demodulation to enable data transmission over analog communication channels.
Option D:
A transmitter sends data over a communication channel but does not perform modulation and demodulation.
2.
..... is a kind of network adapter.
A) Sound card.
B) Graphics card.
C) Ethernet card.
D) None of the above.
Show Answer
Correct Answer:
Correct answer is: (C) Ethernet card.
Exam Relevance:
CCNA, CompTIA Network+, Network Fundamentals
Difficulty:
Easy
Concept notes:
An Ethernet card is a type of network adapter that allows a computer to connect to a network using Ethernet technology.
Common Mistakes:
A common misunderstanding is that other types of cards, such as sound cards or graphics cards, can function as network adapters. However, these cards serve different purposes and are not designed for network connectivity.
Explanations:
An Ethernet card is specifically designed to enable network communication by providing a physical interface for connecting to an Ethernet network. It is a network adapter that facilitates data transmission over a network.
Option Analysis:
Option A:
A sound card is used for audio processing and is not a network adapter.
Option B:
A graphics card is used for rendering images and video and is not a network adapter.
Option C:
An Ethernet card is a network adapter designed for connecting to an Ethernet network.
Option D:
This option is incorrect as an Ethernet card is indeed a network adapter.
3.
Which device matches the definition: "Device that connects computers in a network with cables, to enable communication between them (but not used for internet access)"
A) Switch.
B) STP.
C) UTP.
D) NIC.
Show Answer
Correct Answer:
Correct answer is: (A) Switch.
Exam Relevance:
CCNA, CompTIA Network+, Network+ Certification
Difficulty:
Moderate
Concept notes:
A switch is a network device that connects multiple devices in a network and enables communication between them. It operates at the data link layer of the OSI model and uses MAC addresses to direct data to the correct destination.
Common Mistakes:
A common misunderstanding is that a switch is used for internet access. However, a switch is primarily used for local network communication and does not provide internet access directly.
Explanations:
A switch is the correct answer because it connects multiple devices in a network using cables and enables communication between them. It does not provide internet access, which aligns with the given definition.
Option Analysis:
Option A:
Switch is the correct answer as it connects multiple devices in a network and enables communication between them without providing internet access.
Option B:
STP (Shielded Twisted Pair) is a type of cable, not a network device.
Option C:
UTP (Unshielded Twisted Pair) is also a type of cable, not a network device.
Option D:
NIC (Network Interface Card) is a component in a computer that allows it to connect to a network, but it does not connect multiple devices together.
4.
Attached to the end of the network to stop the data from bouncing back and causing interference
A) Repeater.
B) Terminator.
C) Modem.
D) Switch.
Show Answer
Correct Answer:
Correct answer is: (B) Terminator.
Exam Relevance:
CCNA, CompTIA Network+, Network Fundamentals
Difficulty:
Easy
Concept notes:
A terminator is a device used in networks to absorb signals at the end of a cable, preventing signal reflection and interference.
Common Mistakes:
A common misunderstanding is that a repeater, modem, or switch might serve the same function as a terminator. However, these devices have different roles in a network.
Explanations:
A terminator is specifically designed to absorb signals at the end of a cable, preventing the signals from bouncing back and causing interference. This is crucial for maintaining the integrity of the data transmission in the network.
Option Analysis:
Option A:
A repeater amplifies and retransmits signals but does not prevent signal reflection.
Option B:
A terminator absorbs signals to prevent reflection and interference.
Option C:
A modem converts digital signals to analog and vice versa but does not prevent signal reflection.
Option D:
A switch forwards data packets to specific destinations but does not prevent signal reflection.
5.
The "traffic managers" of the internet, that help data get from one IP address to its destination IP address, are called:
A) Fiber Optic Cables.
B) Routers.
C) Web Servers.
D) Internet Protocol Addresses.
Show Answer
Correct Answer:
Correct answer is: (B) Routers.
Exam Relevance:
CCNA, CompTIA Network+, CISSP
Difficulty:
Easy
Concept notes:
Routers are network devices that direct data packets from one IP address to another, ensuring data reaches its intended destination.
Common Mistakes:
A common misunderstanding is that fiber optic cables or web servers are responsible for directing traffic, but they do not perform the routing function.
Explanations:
Routers are responsible for directing data packets from one IP address to another. They analyze the destination IP address and determine the best path for the data to travel, ensuring it reaches its intended destination efficiently. This function is crucial for the operation of the internet, as it ensures that data is correctly routed from its source to its destination.
Option Analysis:
Option A:
Fiber Optic Cables are used for transmitting data but do not manage traffic routing.
Option B:
Routers are the correct choice as they manage and direct data traffic between IP addresses.
Option C:
Web Servers host websites and applications but do not manage traffic routing.
Option D:
Internet Protocol Addresses are used to identify devices on a network but do not manage traffic routing.
6.
What tool is used to lock RJ45 to the twisted pair cables?
A) Crimping tools.
B) Multi-tester.
C) Wire Stripper.
D) LAN tester.
Show Answer
Correct Answer:
Correct answer is: (A) Crimping tools.
Exam Relevance:
CompTIA Network+, Cisco CCNA, ITIL Foundation
Difficulty:
Easy
Concept notes:
Crimping tools are used to securely attach RJ45 connectors to twisted pair cables.
Common Mistakes:
A common mistake is to confuse crimping tools with wire strippers, which are used to remove the outer insulation from the cable, not to attach the connector.
Explanations:
Crimping tools are specifically designed to apply the necessary pressure to secure the RJ45 connector to the twisted pair cables. This ensures a reliable electrical connection and physical stability. Other tools like wire strippers, multi-testers, and LAN testers serve different purposes in network cable installation and testing.
Option Analysis:
Option A:
Crimping tools are used to attach RJ45 connectors to twisted pair cables.
Option B:
Multi-testers are used to test the functionality of network cables, not to attach connectors.
Option C:
Wire strippers are used to remove the outer insulation from the cable, not to attach connectors.
Option D:
LAN testers are used to verify the integrity of network connections, not to attach connectors.
7.
Forwarding data packets to their destination by the most efficient route. What is this?
A) WAP.
B) Switch.
C) Router.
D) Network Cards.
Show Answer
Correct Answer:
Correct answer is: (C) Router.
Exam Relevance:
CCNA, CompTIA Network+, CIW Network Specialist
Difficulty:
Easy
Concept notes:
A router is a network device that forwards data packets to their destination by the most efficient route.
Common Mistakes:
A common misunderstanding is that switches or network cards can perform routing functions. However, switches primarily manage traffic within a local network, and network cards are used for connecting devices to a network, not for routing.
Explanations:
Routers are designed to analyze the destination address of data packets and determine the best path for forwarding them to their destination. This process involves routing protocols and algorithms that help routers make decisions about the most efficient route. Other devices like switches and network cards do not have this capability.
Option Analysis:
Option A:
WAP (Wireless Access Point) is used to provide wireless connectivity to devices within a local network but does not perform routing functions.
Option B:
Switches manage traffic within a local network by directing data packets to specific devices but do not route packets between different networks.
Option C:
Routers are specifically designed to forward data packets to their destination by the most efficient route, making them the correct answer.
Option D:
Network cards (NICs) are used to connect devices to a network but do not perform routing functions.
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Frequently Asked Questions
What is the role of a router in a network?
A router directs data packets to their intended destinations by using IP routing. It connects multiple networks and forwards data packets between them.
How does a network switch differ from a router?
A network switch operates at the data link layer and forwards data packets within a local network, while a router operates at the network layer and forwards packets between different networks.
What is the purpose of an Ethernet card?
An Ethernet card, also known as a network adapter, enables a computer to connect to a network using twisted pair cables and RJ45 connectors.
What is signal reflection and how does it affect network performance?
Signal reflection occurs when a signal bounces back along a cable, causing interference. This can degrade the quality of the signal and reduce network performance.
What is the function of a network terminator?
A network terminator is used to prevent signal reflection in a network by absorbing the signal at the end of a cable, ensuring clear communication.