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What is a computer network?
What is a computer network?
A computer network is two or more computers connected via software and hardware that can communicate with each other.
Which of the following is a main reason for setting up a network?
Which of the following is a main reason for setting up a network?
Which type of network is specifically located in a home?
Which type of network is specifically located in a home?
A wide area network (WAN) spans a large physical distance.
A wide area network (WAN) spans a large physical distance.
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What are the common types of wired transmission media used in networks?
What are the common types of wired transmission media used in networks?
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A network requires a ______ to connect nodes.
A network requires a ______ to connect nodes.
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What is a client/server network?
What is a client/server network?
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Which of the following is a method to secure a wireless network?
Which of the following is a method to secure a wireless network?
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What technologies are commonly used for broadband internet access?
What technologies are commonly used for broadband internet access?
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What is the maximum range of Wi-Fi 4 or Wi-Fi 5 devices?
What is the maximum range of Wi-Fi 4 or Wi-Fi 5 devices?
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What is a network adapter?
What is a network adapter?
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Which statement is true regarding a client/server network?
Which statement is true regarding a client/server network?
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What is the primary function of a router in a network?
What is the primary function of a router in a network?
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Which type of cable is characterized by having a single copper wire surrounded by layers of plastic?
Which type of cable is characterized by having a single copper wire surrounded by layers of plastic?
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What distinguishes a peer-to-peer network from a client/server network?
What distinguishes a peer-to-peer network from a client/server network?
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What type of connection requires a modem for signal translation?
What type of connection requires a modem for signal translation?
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What does backward compatibility in networking refer to?
What does backward compatibility in networking refer to?
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Which device facilitates and controls the flow of data in a network?
Which device facilitates and controls the flow of data in a network?
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Why do home networks often utilize peer-to-peer networking?
Why do home networks often utilize peer-to-peer networking?
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Which component is essential for each node to connect to a network?
Which component is essential for each node to connect to a network?
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What is the main advantage of server-based communication in a network with many nodes?
What is the main advantage of server-based communication in a network with many nodes?
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What is the primary disadvantage of setting up a computer network?
What is the primary disadvantage of setting up a computer network?
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Which term refers to the maximum speed at which data can be transmitted over a network?
Which term refers to the maximum speed at which data can be transmitted over a network?
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What purpose does a local area network (LAN) serve?
What purpose does a local area network (LAN) serve?
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Which of the following is NOT a benefit of networking computers?
Which of the following is NOT a benefit of networking computers?
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What type of network allows for communication among devices that are very close to one person?
What type of network allows for communication among devices that are very close to one person?
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Which of the following is an essential consideration before creating a home network?
Which of the following is an essential consideration before creating a home network?
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What is the purpose of a router in a network?
What is the purpose of a router in a network?
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How is throughput different from data transfer rate?
How is throughput different from data transfer rate?
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What is one way to avoid potential problems with wireless networks?
What is one way to avoid potential problems with wireless networks?
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Which of the following terms is used to describe a network that is designed to provide access to a specific geographical area, such as a city?
Which of the following terms is used to describe a network that is designed to provide access to a specific geographical area, such as a city?
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What type of device is designed to provide centralized data storage and access on a home network?
What type of device is designed to provide centralized data storage and access on a home network?
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What is necessary to access the Internet wirelessly at home?
What is necessary to access the Internet wirelessly at home?
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Which technology might be necessary in rural or mountain areas for Internet access?
Which technology might be necessary in rural or mountain areas for Internet access?
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Which of the following is referred to as high-speed Internet?
Which of the following is referred to as high-speed Internet?
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What acts like a traffic signal on a network?
What acts like a traffic signal on a network?
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What must be considered for the fastest experience on a home network?
What must be considered for the fastest experience on a home network?
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Which statement correctly describes mobile broadband?
Which statement correctly describes mobile broadband?
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What is a key feature of AirPort routers designed by Apple?
What is a key feature of AirPort routers designed by Apple?
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Which devices should ideally utilize the latest Ethernet standard on a network?
Which devices should ideally utilize the latest Ethernet standard on a network?
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What common sources can interfere with wireless signals?
What common sources can interfere with wireless signals?
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Study Notes
Chapter 7: Networking: Connecting Computing Devices
- Chapter 7 focuses on networking, specifically connecting computing devices.
- Learning objectives cover describing computer networks, different network definitions, transmission media, necessary hardware, network software, and internet access options.
- Additional objectives detail wireless internet access, planning home networks, connecting devices, troubleshooting wireless problems, and securing wireless networks.
- A computer network connects two or more computers allowing communication via software and hardware.
- Each device on a network is called a node. Nodes can be: computers, peripherals (printers, game consoles), or network devices (routers).
Networking Fundamentals
- Benefits of networks include sharing high-speed internet, printers, peripheral devices, and enabling common communications.
- A downside is the setup and administration time.
- Data transfer rate (bandwidth) is the maximum data transmission speed.
- Throughput is the actual data transfer speed in megabits per second (Mbps) or gigabits per second (Gbps).
Network Architectures
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Networks are categorized by distance:
- PAN (Personal Area Network): Short-range communication among devices near a person.
- LAN (Local Area Network): Network in a small geographic area.
- HAN (Home Area Network): Specific type of LAN in a home.
- MAN (Metropolitan Area Network): Large network covering a city.
- WAN (Wide Area Network): Spans a large physical distance.
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Networks are categorized by levels of administration:
- Client/server: Client computers request actions, servers provide resources
- Peer-to-peer: Connected nodes communicate directly with each other.
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Networks are classified by protocols like Ethernet, developed by IEEE:
- Ethernet applies to both wired and wireless networks.
- Includes wired networks and wireless networks (Wi-Fi and GbE)
- Backward compatibility refers to the ability of current devices to use earlier standards.
Network Components
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Networks require:
- A means of connecting nodes (cables or wireless tech).
- Special hardware facilitating communication.
- Software for network operation.
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Network components include:
- Network interface cards (NICs)
- Modems
- Routers
- Switches
- Network adapters for each node.
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Modems translate signals for broadband connections, routers transfer data between networks, and switches manage data flow within a network.
Network Software
- P2P networks use operating systems for their function.
- Client/server networks depend on specialized network operating system (NOS) software on servers to provide information and resources.
Connecting to the Internet
- Broadband Internet is preferred for speed compared to dial-up or cellular.
- Common broadband types include cable, DSL, and fiber-optic services.
- Wireless Internet access methods exist through mobile broadband, Wi-Fi hotspots, and wireless ISPs. Data plans are needed for Internet access.
Installing & Configuring Home Networks
- Device inventory (all devices used) is critical for optimal home network setup.
- Employing latest network standards and equipment is recommended for optimal performance.
- Routers are designed for specific operating systems (e.g., Apple devices with AirPort routers, or Windows).
- Specialized devices (NAS, home network servers) provide central storage and file sharing in networks.
Troubleshooting Wireless Networks
- Factors affecting Wi-Fi range and stability include walls, large metal objects, and distance from the router.
- Wireless range extenders repeat or amplify the router's signal to improve coverage.
Managing & Securing Wireless Networks
- Security protocols improve network security.
- Changing the network name, disabling SSID broadcast, and changing default passwords provide a more secure network.
- Router configurations enable further network security measures.
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Description
Chapter 7 delves into the essentials of networking, emphasizing how computing devices communicate through software and hardware. Key topics include network definitions, transmission media, setting up a home network, and troubleshooting wireless issues. Understanding these concepts is vital for efficient internet access and security.
