Rasilimali za Kujifunza za Daraja la Kijani Kwa Networking

Muhtasari

Definition of a Computer Network:

A computer network is a system that consists of multiple computers and other devices that are connected together to share resources and communicate with each other. These interconnected devices can include personal computers, printers, servers, routers, and more. By establishing a network, these devices can easily exchange data and information, allowing users to share files, access shared resources, and communicate efficiently.

Types of Networks:

There are several types of computer networks, each designed for specific purposes. These include: Personal Area Network (PAN), which connects devices in close proximity like smartphones and laptops; Local Area Network (LAN), which links devices within a limited area such as a home, school, or office; Wide Area Network (WAN), connecting devices over a large geographical area; Metropolitan Area Network (MAN), covering a city or large campus; and the Internet, a global network that connects millions of devices worldwide.

Network Topology:

Network topology refers to the physical or logical layout of a network. Common topologies include: Star Topology, where all devices are connected to a central hub; Bus Topology, where all devices share a single communication line; and Ring Topology, where devices are connected in a circular fashion. Understanding these topologies is crucial for designing and troubleshooting networks effectively.

Network Devices:

Various network devices play essential roles in ensuring smooth communication and data transfer within a network. These devices include Hubs, which help connect multiple devices in a LAN; Modems, facilitating internet access; Switches, enabling devices to communicate within a LAN; Routers, directing data between different networks; and Network Interface Cards (NIC), allowing devices to connect to a network. Each device serves a unique purpose in maintaining network functionality.

Advantages of Networking:

Networking offers numerous advantages in the realm of Information and Communication Technology (ICT). By connecting devices in a network, users can easily share resources, such as printers and files, enhancing collaboration and productivity. Additionally, networks provide a platform for seamless communication through email and messaging services. The ability to access information globally via the Internet further expands possibilities for research, learning, and entertainment. Understanding these advantages underscores the significance of networking in the ICT landscape.

Malengo

Understand the advantages of networking in the context of ICT
Explore different network devices (Hub, Modems, Switches, Routers, Network Interface Card)
Understand the definition of a computer network
Recognize various network topologies (Star, Bus, Ring)
Identify and differentiate the types of networks (PAN, LAN, WAN, MAN, Internet)

Maelezo ya Somo

Haipatikani

Tathmini ya Somo

Hongera kwa kukamilisha somo la Networking. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.

Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.

Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.

Define a computer network. A. A collection of interconnected computers and devices that can communicate with each other B. A single computer system that operates independently C. A group of software programs installed on a computer D. The physical components of a computer system Answer: A. A collection of interconnected computers and devices that can communicate with each other
What does "LAN" stand for in the context of networking? A. Local Access Network B. Large Area Network C. Local Area Network D. Longitudinal Area Network Answer: C. Local Area Network
Which network topology connects all devices to a central hub or switch? A. Star B. Bus C. Ring D. Mesh Answer: A. Star
What is the function of a modem in a computer network? A. Connects multiple networks together B. Routes data packets to their destination C. Converts digital signals to analog signals for transmission over telephone lines D. Controls the flow of data packets within a network Answer: C. Converts digital signals to analog signals for transmission over telephone lines
Which device is used to connect multiple devices in a network and broadcast data to all connected devices? A. Router B. Switch C. Hub D. NIC Answer: C. Hub

Vitabu Vinavyopendekezwa

	Networking Essentials Manukuu A Guide to Networking Concepts Mchapishaji Pearson Mwaka 2019 ISBN 9780134873625
	Computer Networking: A Top-Down Approach Manukuu International Edition Mchapishaji Pearson Mwaka 2017 ISBN 9780133594140

Maswali ya Zamani

Unajiuliza maswali ya zamani kuhusu mada hii yanaonekanaje? Hapa kuna idadi ya maswali kuhusu Networking kutoka miaka iliyopita.

JAMB UTME - Computer Studies - 2022 (Bofya kufanya tathmini kamili)

Swali 1 Ripoti

Which type of network can span several building, but is usually less than 30 square miles big?

CAN

LAN

MAN

WAN

Tazama Jibu

WAEC SSCE - Computer Studies - 2022 (Bofya kufanya tathmini kamili)

Swali 1 Ripoti

2(a) Use appropriate labelled diagrams to illustrate the following network topologies.
i Startopology (ii) bustopology (iii) ring topology.

(b) State one advantage of: i Star topology ii Bus topology.

Jibu

(a) i. Star topology: In a star topology, all the devices are connected to a central device called a hub or switch. The hub acts as a central point of communication and manages the flow of data between devices. Here is a labeled diagram of a star topology: ``` Device 1 Device 2 Device 3 | | | +-------------+-------------+ Hub | CPU ``` ii. Bus topology: In a bus topology, all the devices are connected to a single cable called a bus. The data transmitted by one device is received by all the devices on the network. Here is a labeled diagram of a bus topology: ``` Device 1 | Device 2 | Device 3 | +-------+ | Bus | +-------+ | CPU ``` iii. Ring topology: In a ring topology, all the devices are connected to form a closed loop. Data is transmitted in one direction around the ring, and each device acts as a repeater to amplify the signal and pass it on to the next device. Here is a labeled diagram of a ring topology: ``` +-----------+ | Device 1 | +-----------+ | +-----------+ | Device 2 | +-----------+ | +-----------+ | Device 3 | +-----------+ | +-----------+ | CPU | +-----------+ ``` (b) i. Advantage of Star topology: One advantage of a star topology is that it is easy to install and maintain. If a device fails or needs to be added, it can be easily replaced or added without affecting the rest of the network. Additionally, the hub or switch can be used to monitor and manage the network traffic, making it easier to troubleshoot any issues. ii. Advantage of Bus topology: One advantage of a bus topology is that it is relatively inexpensive to install and maintain. Since all the devices are connected to a single cable, it requires less cable and equipment than other topologies. Additionally, the bus topology is scalable, meaning new devices can be added to the network without significant disruption. (c) i. Disadvantage of Bus topology: One disadvantage of a bus topology is that it is vulnerable to network congestion and collisions. Since all the devices share a single communication channel, if multiple devices try to transmit data simultaneously, collisions can occur, causing delays and reducing the network performance. Additionally, if the bus cable fails, the entire network can be affected. ii. Disadvantage of Ring topology: One disadvantage of a ring topology is that it is also vulnerable to network congestion and failures. If a device or cable fails, the entire network can be disrupted. Additionally, adding or removing devices from a ring topology can be challenging and require significant network reconfiguration.

Maelezo ya Majibu

Tazama Jibu