Computer Communication Networks Quiz

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Questions and Answers

What is the main function of network protocols?

To govern the principles of network operation
To design the physical layout of a network
To ensure correct and efficient transmission of data over a network (correct)
To provide services to other computers in a network

Which component of a computer communication network refers to the design and structure of the network?

Network security
Routing algorithms
Network architecture (correct)
Data transmission

What are the three main types of network architecture mentioned in the text?

Client-server, peer-to-peer, and hybrid (correct)
Transmission Control Protocol (TCP), Internet Protocol (IP), and User Datagram Protocol (UDP)
Data transmission, network security, and routing algorithms
Local area networks (LANs), wide area networks (WANs), and the internet

In client-server architecture, what is the function of servers?

To provide services to other computers in the network (A) Signup and view all the answers

What are sets of rules and conventions that govern the formatting and transmission of data over a network known as?

Network protocols (C) Signup and view all the answers

Which component ensures that data is transmitted correctly and efficiently over a network?

Network protocols (A) Signup and view all the answers

In a peer-to-peer (P2P) architecture, how do computers on the network function?

As both a client and a server (D) Signup and view all the answers

What does network security aim to protect against?

Unauthorized access, misuse, malfunction, modification, or destruction (A) Signup and view all the answers

What is data transmission in the context of computer networks?

Sending data from one device to another over a network (D) Signup and view all the answers

What is the main purpose of routing algorithms in computer networks?

To determine the best path for data to travel through a network (D) Signup and view all the answers

What is done in distance-vector routing?

Each router sends its complete routing table to its neighbors periodically (C) Signup and view all the answers

What is the primary feature of link-state routing?

Each router sends updates about the state of its links to all other routers in the network (D) Signup and view all the answers

What does hybrid architecture combine in computer networks?

Elements of client-server and peer-to-peer architectures (B) Signup and view all the answers

What does network security include as measures for protection?

Firewalls, antivirus software, and encryption techniques (C) Signup and view all the answers

What is the role of each computer in a peer-to-peer (P2P) architecture?

Sharing resources and services with other computers on the network (D) Signup and view all the answers

What is the main function of data transmission in computer networks?

Sending data from one device to another over a network (A) Signup and view all the answers

What is the function of IP addresses in a network?

Identifying devices connected to the internet (B) Signup and view all the answers

What is the purpose of MAC addresses in a network?

Identifying devices connected to a network (B) Signup and view all the answers

What is the primary role of hubs in a network?

Transmitting data to all connected devices (D) Signup and view all the answers

What is the main function of the TCP/IP protocol suite?

Setting up and maintaining networks (C) Signup and view all the answers

What is the purpose of network addressing?

Identifying devices connected to the internet (C) Signup and view all the answers

What is the distinguishing factor of MAC addresses?

They are 12 digits long, consisting of 6 groups of 2 digits. (A) Signup and view all the answers

What is the main difference between switches and hubs?

Switches learn MAC addresses of connected devices and only forward data to the intended device, while hubs broadcast data to all connected devices. (C) Signup and view all the answers

Which layer of the TCP/IP protocol suite is responsible for ensuring reliable data transfer between devices?

Transport Layer (C) Signup and view all the answers

What is the main function of a router in a computer network?

Connecting different networks together, allowing devices on one network to communicate with devices on another network (C) Signup and view all the answers

What distinguishes serial communication from parallel communication?

Serial communication involves sending data one bit at a time, making it slower but more reliable, while parallel communication involves sending multiple bits at once, making it faster but less reliable. (C) Signup and view all the answers

What does the Data Link Layer of the OSI model manage?

Managing the flow of data between devices on a network (A) Signup and view all the answers

In the context of network security, what is the primary function of firewalls?

Protecting networks from unauthorized access by filtering incoming and outgoing network traffic (A) Signup and view all the answers

What is the primary role of the Presentation Layer in the OSI model?

Translating data into a format that can be understood by the Application Layer (D) Signup and view all the answers

What does the Session Layer of the OSI model do?

Establishing, maintaining, and terminating connections between devices (A) Signup and view all the answers

What is the primary function of the Network Interface Layer (NIL) in the TCP/IP protocol suite?

Responsible for transferring data between devices on the same network. (C) Signup and view all the answers

What distinguishes the Internet Layer of the TCP/IP protocol suite?

Provides a mechanism for routing data across the internet, using IP addresses to identify devices. (B) Signup and view all the answers

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Study Notes

Computer Communication Networks

Computer communication networks are systems of interconnected devices that enable the transfer of data between them. These networks can range from local area networks (LANs) to wide area networks (WANs) and the internet. The main components of a computer communication network include network protocols, network architecture, network security, data transmission, and routing algorithms.

Network Protocols

Network protocols are sets of rules and conventions that govern the formatting and transmission of data over a network. They ensure that data is transmitted correctly and efficiently. Some common network protocols include the Transmission Control Protocol (TCP), the Internet Protocol (IP), and the User Datagram Protocol (UDP).

Network Architecture

Network architecture refers to the design and structure of a network. It includes the physical layout of the network, the arrangement of its components, and the principles that govern its operation. There are three main types of network architecture: client-server, peer-to-peer, and hybrid.

Client-Server Architecture

In client-server architecture, one or more computers act as servers, providing services to other computers that act as clients. This architecture is commonly used in enterprise networks.

Peer-to-Peer Architecture

In peer-to-peer (P2P) architecture, all computers on the network have equal privileges and responsibilities. Each computer can act as both a client and a server, sharing resources and services with other computers on the network.

Hybrid Architecture

Hybrid architecture combines elements of client-server and peer-to-peer architectures.

Network Security

Network security is the practice of protecting computer networks and their data from unauthorized access, misuse, malfunction, modification, or destruction. It includes measures such as firewalls, antivirus software, and encryption techniques.

Data Transmission

Data transmission refers to the process of sending data from one device to another over a network. It involves converting data into a format that can be transmitted over the network, transmitting the data, and then converting it back into its original format at the receiving end.

Routing Algorithms

Routing algorithms are used to determine the best path for data to travel through a network. There are two main types of routing algorithms: distance-vector and link-state.

Distance-Vector Routing Algorithm

In distance-vector routing, each router sends its complete routing table to its neighbors periodically. The neighbors then update their routing tables based on the information received.

Link-State Routing Algorithm

In link-state routing, each router sends updates about the state of its links to all other routers in the network. The other routers then use this information to calculate the shortest path to each destination.

In conclusion, computer communication networks play a crucial role in connecting devices and allowing them to communicate with each other. Understanding the components and functioning of these networks is essential for effectively utilizing them in various applications.

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