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Unit Viii Information And Communication Technology (Ict)
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Computer Networks – Quiz 36
Computer Networks Quiz 36 (10 MCQs)
This set of multiple-choice questions evaluates understanding of network performance, communication latency, and the OSI model. It covers concepts such as IP protocol, data transmission speed, network security, and file transfer processes. The questions assess knowledge of network layers, service interfaces, and the principles of digital communication, including signal propagation and synchronization.
Quiz Instructions
Select an option to see the correct answer instantly.
1.
A computer network is a system of:
A) Two or more computing devices connected to one another.
B) Data transfer and information storage.
C) Sharing devices like scanners.
D) A whole lot of individual machines working on their own.
Show Answer
Correct Answer:
Correct answer is: (A) Two or more computing devices connected to one another.
Exam Relevance:
CCNA, CompTIA Network+, CIW Network Specialist
Difficulty:
Easy
Concept notes:
A computer network is defined as a system where two or more computing devices are connected to share resources and communicate with each other.
Common Mistakes:
A common misunderstanding is that a network involves only data transfer or sharing devices, but it fundamentally requires the connection of computing devices.
Explanations:
A computer network is a system that connects two or more computing devices, such as computers, servers, and other devices, to share resources and communicate. This definition encompasses the core concept of a network, which is the interconnection of computing devices.
Option Analysis:
Option A:
Correct. This option accurately defines a computer network as a system of two or more computing devices connected to one another.
Option B:
Incorrect. While data transfer and information storage are functions of a network, they do not define what a network is.
Option C:
Incorrect. Sharing devices like scanners is a feature of a network, but it does not define the network itself.
Option D:
Incorrect. This option is vague and does not accurately describe a computer network.
2.
Responsible for packet switching
A) TCP.
B) UDP.
C) IP.
D) FTP.
Show Answer
Correct Answer:
Correct answer is: (C) IP.
Exam Relevance:
CCNA, CISSP, CompTIA Network+
Difficulty:
Moderate
Concept notes:
IP (Internet Protocol) is responsible for packet switching in computer networks. Packet switching involves breaking data into smaller units (packets) and routing them independently across the network.
Common Mistakes:
A common misunderstanding is that TCP or UDP is responsible for packet switching. While TCP and UDP handle transport layer functions, IP is the protocol that handles the routing and forwarding of packets.
Explanations:
IP is responsible for packet switching because it defines the format of packets and the addressing scheme used to route packets from the source to the destination. IP ensures that packets are correctly addressed and routed through the network, even if they take different paths.
Option Analysis:
Option A:
TCP (Transmission Control Protocol) is responsible for reliable data transfer and does not handle packet switching.
Option B:
UDP (User Datagram Protocol) is a connectionless protocol that does not handle packet switching.
Option C:
IP (Internet Protocol) is responsible for packet switching and routing packets through the network.
Option D:
FTP (File Transfer Protocol) is used for transferring files and does not handle packet switching.
3.
Sending files from your computer to the internet or to another internet user.
A) Downloading.
B) Uploading.
C) Surfing the web.
D) None.
Show Answer
Correct Answer:
Correct answer is: (B) Uploading.
Exam Relevance:
CCNA, CompTIA Network+, CIW Network Specialist
Difficulty:
Easy
Concept notes:
Uploading refers to the process of sending files from a local computer to the internet or to another internet user.
Common Mistakes:
A common mistake is confusing uploading with downloading. Downloading is the process of receiving files from the internet to a local computer, while uploading is the opposite.
Explanations:
Uploading is the process of sending files from a local computer to the internet or to another internet user. This aligns with the description given in the question, making it the correct answer.
Option Analysis:
Option A:
Downloading is the process of receiving files from the internet to a local computer, which is the opposite of what the question describes.
Option B:
Uploading is the process of sending files from a local computer to the internet or to another internet user, which matches the description in the question.
Option C:
Surfing the web involves browsing websites and does not involve sending files.
Option D:
None is not applicable as uploading is the correct term for the described process.
4.
Synchronization in digital communication is required for:
A) Correct symbol detection.
B) Power saving.
C) Filtering noise.
D) Bandwidth reduction.
Show Answer
Correct Answer:
Correct answer is: (A) Correct symbol detection.
Exam Relevance:
GATE, IEEE, CCNA
Difficulty:
Moderate
Concept notes:
Synchronization in digital communication ensures that the receiver can correctly identify the transmitted symbols.
Common Mistakes:
A common misunderstanding is that synchronization is primarily for power saving or noise filtering, rather than ensuring accurate symbol detection.
Explanations:
Synchronization in digital communication is crucial for ensuring that the receiver can correctly identify the transmitted symbols. Without proper synchronization, the receiver may misinterpret the symbols, leading to errors in the received data. Synchronization ensures that the receiver's clock is aligned with the transmitter's clock, allowing for accurate symbol detection.
Option Analysis:
Option A:
Correct. Synchronization is essential for correct symbol detection.
Option B:
Incorrect. Synchronization does not directly contribute to power saving.
Option C:
Incorrect. Synchronization is not primarily for filtering noise.
Option D:
Incorrect. Synchronization does not reduce bandwidth.
5.
Refers to the time it takes to send and receive messages or the time that elapses during a communication interaction.
A) Effective Messages.
B) Appropriate Messages.
C) Media Richness Theory.
D) Temporal Structure.
Show Answer
Correct Answer:
Correct answer is: (D) Temporal Structure.
Exam Relevance:
CCNA, CompTIA Network+, Network Fundamentals
Difficulty:
Moderate
Concept notes:
Temporal structure in computer networks refers to the time-related aspects of communication, such as the duration of message transmission and reception.
Common Mistakes:
A common misunderstanding is confusing temporal structure with media richness theory, which focuses on the ability of a communication medium to convey information effectively.
Explanations:
Temporal structure in computer networks is concerned with the time it takes to send and receive messages. This includes the latency and delay involved in the communication process. It is a critical aspect of network performance and efficiency.
Option Analysis:
Option A:
Effective Messages refer to the clarity and comprehensibility of the message content, not the time it takes to send and receive messages.
Option B:
Appropriate Messages refer to the suitability and relevance of the message content to the context, not the time it takes to send and receive messages.
Option C:
Media Richness Theory is about the capability of a communication medium to convey information effectively, not the time it takes to send and receive messages.
Option D:
Temporal Structure is the correct term for the time it takes to send and receive messages in a communication interaction.
6.
Act of sending a message.
A) Feedback.
B) Sender.
C) Transmission.
D) Verbal communication.
Show Answer
Correct Answer:
Correct answer is: (C) Transmission.
Exam Relevance:
CCNA, CompTIA Network+, CIW Network Specialist
Difficulty:
Easy
Concept notes:
In computer networks, transmission refers to the act of sending a message or data from one point to another.
Common Mistakes:
A common misunderstanding is to confuse transmission with feedback, which is the response or acknowledgment received after the message is sent.
Explanations:
Transmission is the process of sending data or messages from a sender to a receiver over a network. It involves the physical transfer of data through a medium such as cables, wireless signals, or other communication channels. This aligns with the act of sending a message as described in the question.
Option Analysis:
Option A:
Feedback is the response received after the message is sent, not the act of sending the message itself.
Option B:
Sender is the entity that initiates the message, but it does not describe the act of sending the message.
Option C:
Transmission is the act of sending a message or data over a network, which matches the question.
Option D:
Verbal communication refers to spoken communication, which is not specific to the act of sending a message in computer networks.
7.
In terms of network what is meaning of SAP?
A) Service Access Point.
B) Service At Point.
C) Service Access Permission.
D) Service At Permission.
Show Answer
Correct Answer:
Correct answer is: (A) Service Access Point.
Exam Relevance:
CCNA, CISSP, CompTIA Network+
Difficulty:
Easy
Concept notes:
In computer networks, a Service Access Point (SAP) is a logical point where network services are accessed. It is a conceptual interface between layers in the OSI model where communication services are provided.
Common Mistakes:
A common misunderstanding is confusing SAP with other acronyms that have similar meanings, such as Service At Point or Service Access Permission.
Explanations:
In the context of computer networks, SAP stands for Service Access Point. It is a logical interface where network services are accessed and provided. This term is specifically used in the OSI model to denote the point at which a service is made available to a higher layer.
Option Analysis:
Option A:
Correct. SAP stands for Service Access Point in the context of computer networks.
Option B:
Incorrect. Service At Point is not a recognized term in computer networking.
Option C:
Incorrect. Service Access Permission is not a recognized term in computer networking.
Option D:
Incorrect. Service At Permission is not a recognized term in computer networking.
8.
Connections are faster and more secure for this network
A) Wired.
B) Wireless.
C) Ring.
D) Mesh.
Show Answer
Correct Answer:
Correct answer is: (A) Wired.
Exam Relevance:
CCNA, Network+, CIW
Difficulty:
Easy
Concept notes:
Wired networks provide faster and more secure connections compared to other network types.
Common Mistakes:
Misunderstanding the security and speed advantages of wired networks over wireless networks.
Explanations:
Wired networks use physical cables to transmit data, which results in faster and more secure connections compared to wireless networks. Wired connections are less susceptible to interference and eavesdropping.
Option Analysis:
Option A:
Correct. Wired networks offer faster and more secure connections.
Option B:
Incorrect. Wireless networks are generally slower and less secure than wired networks.
Option C:
Incorrect. Ring networks do not inherently offer faster or more secure connections than wired networks.
Option D:
Incorrect. Mesh networks do not inherently offer faster or more secure connections than wired networks.
9.
The further apart the networked computers, the ..... the signal will become
A) Stronger.
B) Weaker.
C) Either (A) or (B).
D) Neither (A) nor (B).
Show Answer
Correct Answer:
Correct answer is: (B) Weaker.
Exam Relevance:
CCNA, CompTIA Network+, CIW Network Specialist
Difficulty:
Easy
Concept notes:
In computer networks, the signal strength diminishes as the distance between networked computers increases.
Common Mistakes:
A common misunderstanding is that signal strength might increase with distance due to the idea that signals might spread out over a larger area.
Explanations:
In computer networks, signals travel through various mediums such as cables or wireless frequencies. As the distance increases, the signal strength weakens due to factors like attenuation, interference, and signal loss. This is a fundamental principle in network design and signal propagation.
Option Analysis:
Option A:
This is incorrect because signal strength does not increase with distance.
Option B:
This is correct because signal strength decreases with distance.
Option C:
This is incorrect because the signal cannot be both stronger and weaker simultaneously.
Option D:
This is incorrect because the signal does weaken with distance.
10.
Point-to-point communication is also called
A) Unicast communication.
B) Broadcast communication.
C) Multicast communication.
D) Group communication.
Show Answer
Correct Answer:
Correct answer is: (A) Unicast communication.
Exam Relevance:
CCNA, CompTIA Network+, CISSP
Difficulty:
Easy
Concept notes:
Point-to-point communication involves sending data directly from one device to another, without involving other devices in the network.
Common Mistakes:
A common misunderstanding is confusing point-to-point communication with broadcast or multicast communication, which involve sending data to multiple devices.
Explanations:
Unicast communication is the correct term for point-to-point communication because it specifically refers to the transmission of data from a single source to a single destination. This type of communication is direct and does not involve any intermediary devices or multiple recipients.
Option Analysis:
Option A:
Correct. Unicast communication is the term used for point-to-point communication.
Option B:
Incorrect. Broadcast communication involves sending data to all devices in a network.
Option C:
Incorrect. Multicast communication involves sending data to a group of devices.
Option D:
Incorrect. Group communication typically refers to multicast communication, which involves multiple recipients.
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Frequently Asked Questions
What is the OSI model and how does it relate to computer networks?
The OSI model is a conceptual framework that describes how information is transmitted between different devices in a network. It consists of seven layers, each responsible for specific network functions, from physical data transmission to application-level data handling.
How does packet switching work in a computer network?
Packet switching is a method of sending data in which messages are divided into smaller units called packets. Each packet is transmitted independently and can take different routes to reach its destination, where they are reassembled into the original message.
What is the role of IP protocol in network communication?
The IP protocol is responsible for addressing and routing packets of data across networks. It ensures that data packets are sent to the correct destination by using IP addresses and routing tables.
How does network security impact the reliability of data transmission?
Network security measures protect data from unauthorized access and ensure the integrity and confidentiality of data during transmission. Effective security protocols can prevent data breaches and maintain the reliability of data transmission.
What is the difference between wired and wireless networks?
Wired networks use physical cables to connect devices, providing a stable and often faster connection. Wireless networks use radio waves to connect devices without the need for cables, offering greater flexibility but potentially lower speeds and reliability.