Computer Networks CS313 - Chapter 1 Quiz

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Questions and Answers

What is the primary function of a Network Operating System (NOS)?

To manage hardware resources without user input.

To process only single requests at a time.

To operate systems independently of network devices.

To facilitate and manage network connections among devices. (correct)

Which of the following best describes how text is represented in digital format?

Using bit patterns defined by Unicode. (correct)

As a series of images.

In binary form only.

As audio recordings.

How are audio signals typically described in digital format?

As bit patterns resembling images.

As series of numbers in hexadecimal.

As recordings or broadcasts of sound. (correct)

As text encoded using Unicode.

What defines a node in a network?

Any device that connects to the network, including hosts and networking devices. Signup and view all the answers

What is a communication link in a network primarily used for?

To transfer data between devices. Signup and view all the answers

What type of connection involves a dedicated link between only two devices?

Point-to-Point connection Signup and view all the answers

Which topology has a central controller to which all other devices connect?

Star topology Signup and view all the answers

What is a key disadvantage of a star topology?

Single point of failure Signup and view all the answers

Which topology involves a single main cable with multiple droplines attached?

Bus topology Signup and view all the answers

What advantage is associated with a ring topology?

Low cabling requirement Signup and view all the answers

In a multipoint connection, how is the link utilized?

Shared between multiple devices Signup and view all the answers

What is a disadvantage of bus topology?

Difficulty in adding new devices Signup and view all the answers

Which type of connection allows for direct transmission between all interconnected nodes?

Ring connection Signup and view all the answers

What defines the size of a Metropolitan Area Network (MAN)?

Between 5 to 50 km in diameter. Signup and view all the answers

Which of the following technologies is associated with Local Area Networks?

Token ring. Signup and view all the answers

What is one of the main characteristics of a Wide Area Network (WAN)?

Data travels through telephone or cable lines. Signup and view all the answers

Which option is NOT a typical characteristic of a Local Area Network?

Low data transfer speeds. Signup and view all the answers

How is a Metropolitan Area Network typically managed?

By a single entity such as an ISP. Signup and view all the answers

What is the primary function of a modem in a Wide Area Network?

To modulate and demodulate signals. Signup and view all the answers

Which statement is true about the Internet as a WAN?

It is the world's largest WAN. Signup and view all the answers

What constitutes a computer network?

A group of computers/devices using common protocols. Signup and view all the answers

Which of the following correctly identifies network elements?

Nodes, Medium, Protocol, Operating System, Software. Signup and view all the answers

What role does network software (SW) play in a computer network?

It helps in issuing requests and responses between clients and servers. Signup and view all the answers

Which statement accurately describes a communication protocol?

It is a set of rules for exchanging information over a network. Signup and view all the answers

What types of technologies can be used to form interconnections between nodes?

A combination of wired, optical, and wireless technologies. Signup and view all the answers

In the context of network elements, which of the following describes 'nodes'?

Any devices that are part of the network’s architecture. Signup and view all the answers

Which of the following best defines data communications?

The exchange of information between two devices through a transmission medium. Signup and view all the answers

What function does the operating system (OS) serve in a networked environment?

It manages communications between software and hardware. Signup and view all the answers

Study Notes

Computer Networks (CS313)

Course is CS313, Computer Networks taught by Dr. Heba Sabry
Text is from McGraw-Hill
Introduction chapter (Chapter 1)
Data communication is the exchange of information between two devices via a transmission medium.
A computer network is a group of interconnected computers (nodes) using common communication protocols to share resources.
Components of a network:
- Nodes: Computers, printers, cell phones, routers, switches, modems
- Medium: Interconnections, physically wired, optical, wireless
- Protocol: Set of rules for exchanging information
- Operating System (OS): Manages network resources, handles concurrent requests, and provides security.
- Software (SW): Tools used for communication (e.g., issuing requests, remote access, etc.)
Network connections:
- Point-to-point: Dedicated link; between two devices.
- Multipoint: Shared link; between more than two devices.
Data flow types (simplex, half-duplex, full-duplex) described in a diagram.
Network topologies:
- Mesh: Dedicated link to every node, advantages are robustness and fault detection, disadvantages are high cost for implementation.
- Star: All nodes connect to a central controller, less expensive than mesh, easy to manage and troubleshoot.
- Bus: Nodes share a single cable, easy to install but difficult to isolate faults, less expensive than mesh and star
- Ring: Nodes connect in a ring, easy to install, fault isolation is simple, robust for few nodes, not robust overall.
- Hybrid: Combination of different topologies.
Categories of networks:
- Local Area Network (LAN):
  - Spans a small area (e.g., home, school, office).
  - Administered by a single entity.
  - High speed bandwidth, High throughput.
  - Technologies include FDDI, token ring.
- Metropolitan Area Network (MAN):
  - Larger than LAN, but smaller or equal to WAN.
  - Typically owned and managed by a single entity.
- Wide Area Network (WAN):
  - Extends over a large geographical area.
  - Uses telephone or cable lines.
  - Often requires a modem.
  - The internet is the largest WAN.
Concepts of message types:
- Text, numbers, images, audio, and video
Data representation examples (e.g., text using Unicode, numbers using binary, images as bit patterns)
Diagrams exist for examples of networks, LANs, MANs, and WANs.

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Description

Test your knowledge on the basics of Computer Networks with this quiz based on Chapter 1 of CS313. Explore key concepts such as data communication, network components, and connection types. Perfect for students of Dr. Heba Sabry's course at McGraw-Hill.