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11C - Computer Science > Topic 1.3 Part 1 - Computer networks and topologies > Flashcards

Topic 1.3 Part 1 - Computer networks and topologies Flashcards

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1
Q

What is a computer network?

A

A computer network is a collection of interconnected devices (computers, servers, printers) that can communicate and share resources.

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2
Q

What is network topology?

A

Network topology defines the physical or logical layout of devices in a network and how they are interconnected.

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3
Q

What is a WAN (Wide Area Network)?

A

A WAN is a network that spans a larger geographic area, often connecting LANs across cities or countries.

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4
Q

What is the Internet?

A

The Internet is a global network of interconnected networks that uses the Internet Protocol (IP) for data exchange.

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5
Q

What is a protocol in networking?

A

A protocol is a set of rules and conventions that govern communication between devices in a network.

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6
Q

What is IP address?

A

An IP address is a unique numerical label assigned to each device on a network to identify it.

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7
Q

What is DNS (Domain Name System)?

A

DNS translates human-readable domain names into IP addresses to help locate resources on the Internet.

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8
Q

What is TCP/IP (Transmission Control Protocol/Internet Protocol)?

A

TCP/IP is a suite of protocols that powers the Internet, responsible for data transmission and addressing.

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9
Q

What is a router?

A

A router is a networking device that forwards data between networks and directs traffic on the Internet.

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10
Q

What is a switch?

A

A switch is a device used in Ethernet networks to forward data to the appropriate device within the same network.

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11
Q

What is a modem?

A

A modem converts digital data from a computer into analog signals for transmission over telephone or cable lines.

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12
Q

What is a firewall?

A

A firewall is a security device or software that monitors and controls incoming and outgoing network traffic.

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13
Q

What is a gateway?

A

A gateway connects two networks with different protocols and manages the translation of data between them.

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14
Q

What is bandwidth

A

Bandwidth measures the data transfer rate of a network, typically in bits per second (bps).

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15
Q

What is latency?

A

Latency is the time it takes for data to travel from the source to the destination in a network, often measured in milliseconds.

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16
Q

What is a MAC address?

A

A MAC address (Media Access Control address) is a unique hardware address assigned to network devices.

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17
Q

What is a subnet mask?

A

A subnet mask defines which part of an IP address is the network address and which part is the host address.

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18
Q

What is a gateway address?

A

A gateway address is the IP address of a device that connects a network to another network, such as the Internet.

19
Q

What is a network protocol stack?

A

A network protocol stack is a set of networking protocols and layers used to transmit data, like the OSI or TCP/IP model.

20
Q

What is a packet?

A

A packet is a unit of data transmitted over a network, containing both the data and control information.

21
Q

What is NAT (Network Address Translation)?

A

NAT is a method that allows multiple devices within a private network to share a single public IP address.

22
Q

What is QoS (Quality of Service)?

A

QoS is a set of techniques used to prioritize and manage network traffic to ensure better performance for specific services.

23
Q

What is a network administrator?

A

A network administrator is responsible for managing and maintaining a computer network, including configuration and troubleshooting.

24
Q

What is a network diagram?

A

A network diagram is a visual representation of the network’s structure, including devices and their connections.

25
Q

What is a star topology?

A

In a star topology, all devices are connected to a central hub or switch.

26
Q

What is a bus topology?

A

In a bus topology, devices are connected to a single central cable, often used in Ethernet networks.

27
Q

What is a ring topology?

A

In a ring topology, devices are connected in a closed loop, where data travels in one direction.

28
Q

What is a mesh topology?

A

A mesh topology connects each device to every other device, providing redundancy and fault tolerance.

29
Q

What is a hybrid topology?

A

A hybrid topology combines two or more different topologies to meet specific network requirements.

30
Q

What is a peer-to-peer network?

A

In a peer-to-peer network, devices communicate directly with each other without a central server.

31
Q

What is a client-server network?

A

In a client-server network, clients request services from a central server, which provides resources and manages the network.

32
Q

What is a wireless network?

A

A wireless network uses radio waves to connect devices, eliminating the need for physical cables.

33
Q

What is a PAN (Personal Area Network)?

A

A PAN is a small network used for connecting devices like smartphones and laptops within a personal area.

34
Q

What is an intranet?

A

An intranet is a private network within an organization that uses Internet technologies for internal communication.

35
Q

What is an extranet?

A

An extranet is a controlled network that allows limited access to specific external users or organizations.

36
Q

What is a VLAN (Virtual LAN)?

A

A VLAN is a logical network that groups devices into separate broadcast domains, even if they are physically connected to the same network.

37
Q

What is a DMZ (Demilitarised Zone)?

A

A DMZ is a network segment that acts as a buffer between an internal network and the Internet, often containing public-facing servers.

38
Q

What is load balancing?

A

Load balancing distributes network traffic across multiple servers to optimize performance and prevent overload.

39
Q

What is network segmentation?

A

Network segmentation divides a network into smaller, isolated segments to enhance security and control.

40
Q

What is a network bridge?

A

A network bridge connects two or more network segments and filters traffic between them.

41
Q

What is network convergence?

A

Network convergence refers to the merging of different network services, such as voice, data, and video, into a single network.

42
Q

What is the OSI model?

A

The OSI (Open Systems Interconnection) model is a conceptual framework that defines the functions of a network into seven distinct layers.

43
Q

What is the TCP/IP model?

A

The TCP/IP model is a simplified model used in the Internet that combines functions from the OSI model into four layers.

11C - Computer Science (15 decks)

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