Fichas
Flashcards
Fichas del conjunto (28)
- 1What is a computer network?A digital telecommunications network which allows nodes to share resource.
- 2Describe a LANA local-area network (LAN) is a computer network that spans a relatively small area.
- 3Describe a WANA computer network that spans a relatively large geographical area.
- 4What are the advantages of a computer network?There are several distinct advantages to networking, including: ... Resource sharing – using network-connected peripheral devices like printers, scanners and copiers, or sharing software between multiple users, saves money.
- 5What are the disadvantages of a computer network?Security is good - users cannot see other users' files unlike on stand-alone machines.
- 6What devices are needed to produce a LAN?Network Medium. Wired networks need cable. ...
Cable Connectors. ...
Power Supply. ...
Hub/Switch/Router. ...
Network Software. - 7What is the purpose of a NIC?The NIC contains the electronic circuitry required to communicate using a wired connection.
- 8What is the purpose of a Router?The main purpose of a router is to connect multiple networks and forward packets destined either for its own networks or other networks.
- 9What is the purpose of a Hub?A hub, also called a network hub, is a common connection point for devices in a network. Hubs are devices commonly used to connect segments of a LAN.
- 10What is the purpose of a Switch?The basic function that any switch is supposed to perform is to receive information from any source connected to it and dispatch that information to the appropriate destination only.
- 11What is the purpose of a WAP?A wireless access point (WAP) is a hardware device or configured node on a local area network (LAN) that allows wireless capable devices and wired networks to connect through a wireless standard, including Wi-Fi or Bluetooth.
- 12What is the difference between a Hub and a Switch?What's the difference between a Ethernet hub, a switch, and a router? Ethernet hubs, switches, and routers are all devices that let you connect one or more computers to other computers, networked devices, or even other networks.
- 13What is the Internet?A global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
- 14What is the World Wide Web?An information system on the Internet which allows documents to be connected to other documents by hypertext links, enabling the user to search for information by moving from one document to another.
- 15What is the purpose of a Modem?A modem converts digital signals generated by the computer into analog signals which can be transmitted over a telephone or cable line and transforms incoming analog signals into their digital equivalents.
- 16What is the purpose of an ISP?An Internet service provider (ISP) is an organization that provides services accessing and using the Internet. Internet service providers may be organized in various forms, such as commercial, community-owned, non-profit, or otherwise privately owned.
- 17What is an IP address?A unique string of numbers separated by full stops that identifies each computer using the Internet Protocol to communicate over a network.
- 18What does HTTP stand for?HTTPS stands for Hypertext Transfer Protocol Secure, and instead of acting as its own application layer protocol, it uses separate protocols called SSL (Secure Sockets Layer) and TLS (Transport Layer Security).
- 19What is a URL?The address of a World Wide Web page
- 20How is a URL constructed?A URL can be thought of as the "address" of a web page and is sometimes referred to informally as a "web address."
- 21What are the three different network topologies?Star Topology.
Bus Topology. ...
Ring Topology. ... - 22what are the advantages and disadvantages of a star topology?Disadvantages of a Star Topology. Requires more cable length than a linear topology. If the hub, switch, or concentrator fails, nodes attached are disabled. More expensive than linear bus topologies because of the cost of the hubs, etc.
- 23What are the advantages / disadvantages of a Ring topology?Disadvantages of ring topology. All data being transferred over the network must pass through each workstation on the network, which can make it slower than a star topology. The entire network will be impacted if one workstation shuts down.
- 24What are the advantages / disadvantages of a Bus topology?Bus Topology. Alternatively referred to as a line topology, a bus topology is a network setup in which each computer and network device are connected to a single cable or backbone. The following sections contain both the advantages and disadvantages of using a bus topology with your devices.
- 25List examples of data that need to be kept secureCredit card details
Passwords for your information only
Things that can lead to your online account - 26What is HTTPS and what is it used for?HTTP is the underlying protocol used by the World Wide Web and this protocol defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands.
- 27What is encryptionThe process of converting information or data into a code, especially to prevent unauthorized access.
- 28What is decryption?Decryption is the process of transforming data that has been rendered unreadable through encryption back to its unencrypted form.
Información
- Descripción
- Fichas sobre Flashcards, creado por Sunat Naheem el 04/12/2017.
- Creado por
- Sunat Naheem
- Visitas
- 0
- Valoración