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Questions and Answers
What is a host in a computer network?
What is a host in a computer network?
- A device that only receives information on the network
- Any device that sends and receives information on the network (correct)
- Any device that connects peripherals to the network
- A device that only sends information on the network
What are the resources shared in a network?
What are the resources shared in a network?
- Only peripherals and connections
- Only storage space and peripherals
- Only applications and services
- Applications, services, and storage space (correct)
What type of connection uses electrical signals to transmit data between devices?
What type of connection uses electrical signals to transmit data between devices?
- Satellite transmission
- Fiber-optic cabling
- Copper cabling (correct)
- Wireless connection
What is one of the benefits of networking in terms of peripherals?
What is one of the benefits of networking in terms of peripherals?
What type of device is a printer in a network?
What type of device is a printer in a network?
What is the purpose of a network?
What is the purpose of a network?
What type of connection uses light pulses to transmit data between devices?
What type of connection uses light pulses to transmit data between devices?
What is one of the benefits of networking in terms of communication?
What is one of the benefits of networking in terms of communication?
What type of device can connect to a network?
What type of device can connect to a network?
What is the global scope of computer networks?
What is the global scope of computer networks?
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Study Notes
Fundamentals of Computer Networks
Principles of Networking
- A computer data network is a collection of hosts connected by networking devices.
- A host is any device that sends and receives information on the network.
- Peripherals are devices connected to hosts.
- Example: Printer, Smart phones, etc.
- Resources shared in a network: Services (printing, scanning, databases), Applications, and Storage space.
Benefits of Networking
- Fewer Peripherals Needed: Sharing and managing devices like Printers, Scanners, and Backup devices.
- Increased Communication Capabilities: Collaboration tools like Email, Forums, Instant Messaging for communication between network users.
Types of Networks
LAN (Local Area Network)
- A group of interconnected devices under the same administrative control.
- Traditionally, LANs existed in a single physical location, but now include interconnected local networks with multiple locations.
WAN (Wide Area Network)
- A network that connects LANs in geographically separated locations.
- Example: The Internet, a large WAN composed of millions of interconnected LANs.
Wireless LAN (WLAN)
- Uses radio waves to transmit and receive data in environments where copper cabling is not practical or desirable.
- Allows sharing of resources and accessing the Internet.
Peer-to-Peer Networks
- No dedicated servers or hierarchy among computers.
- Each device has equivalent capabilities and responsibilities.
Client/Server Networks
- Client requests information or services from the server.
- Servers perform processing work for client machines.
- Examples: Company email server, database sorting.
- Network administrators maintain servers for data backups and security measures.
Basic Networking Concepts and Technologies
Bandwidth and Data Transmission
- Bandwidth: the amount of data that can be transmitted within a fixed time period.
- Measured in bits per second (bps), kilobits per second (kbps), megabits per second (mbps).
- 1 byte (B) = 8 bits (b), therefore 1 MBps = 8 Mbps.
- Data Transmission Types: Simplex (one-way transmission of data).
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