Which of the following computer networks cover a large geographic area such as a city country or spans even intercontinental distances?

Option 4 : Wide Area Network

Free

10 Questions 20 Marks 12 Mins

Wide Area Network:

• A wide area network (WAN) is a data network, usually used for connecting computers, that spans a wide geographical area.
• WANs can be used to connect cities, states, or even countries. WANs are often used by larger corporations or organizations to facilitate the exchange of data, and in a wide variety of industries corporations with facilities at multiple locations have embraced WANs. Increasingly, however, even small businesses are utilizing WANs as a way of increasing their communications capabilities.
• Although WANs serve a purpose similar to that of local area networks (LANs), WANs are structured and operated quite differently.
• The user of a WAN usually does not own the communications lines that connect the remote computer systems; instead, the user subscribes to a service through a telecommunications provider. Unlike LANs, WANs typically do not link individual computers, but rather are used to link LANs.
• WANs also transmit data at slower speeds than LANs. WANs are also structurally similar to metropolitan area networks (MANs), but provide communications links for distances greater than 50 kilometres.
• WANs are either point-to-point, involving a direct connection between two sites, or operate across packet-switched networks, in which data are transmitted in packets over shared circuits. Point-to-point WAN service may involve either analogue dial-up lines, in which a modem is used to connect the computer to the telephone line, or dedicated leased digital telephone lines, also known as "private lines."
• Analog lines, which may be either part of a public-switched telephone network or leased lines, are suitable for batch data transmissions, such as non-urgent order entry and point-of-sale transactions. Dedicated digital phone lines permit uninterrupted, secure data transmission at fixed costs.

Hence, the correct answer is Option 4.

With hundreds of Questions based on Networking, we help you gain expertise on Computer Awareness. All for free. Explore Testbook Learn to attain the subject expertise with us.

India’s #1 Learning Platform

Start Complete Exam Preparation

Daily Live MasterClasses

Practice Question Bank

Mock Tests & Quizzes

Get Started for Free Download App

Trusted by 3.3 Crore+ Students

INTRODUCTION Computer networking is the engineering discipline concerned with the communication between computer systems or devices. A computer network is any set of computers or devices connected to each other with the ability to exchange data. It is sometimes considered a sub-discipline of telecommunications, computer science, information technology and computer engineering since it relies heavily upon the theoretical and practical application of these scientific and engineering disciplines. There are three types of networks namely: Internet, intranet, and extranet.

A computer network, often simply referred to as a network, is a collection of computers and devices connected by communications channels that facilitates

The major characteristics of LANs, include their higher data transfer rates, smaller geographic range, and no need for leased telecommunication lines. Current Ethernet or other IEEE 802.3 LAN technologies operate at speeds up to 10Gb. This is the data transfer rate. IEEE has projects investigating the standardization of 40 and 100Gb. Wide area network A wide area network (WAN) is a computer network that covers a large geographic area such as a city, country, or spans even intercontinental distances, using a communications channel that combines many types of media such as telephone lines, cables, and air waves. It usually uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies generally function at the lower three layers of the OSI reference model: the physical layer, the data link layer, and the network layer. The Internet is considered the largest network in the world. The PSTN (Public Switched Telephone Network) also is an extremely large network that is converging to use Internet technologies, although not necessarily through the public Internet. A Wide Area Network involves communication through the use of a wide range of different technologies. These technologies include Point-to-Point WANs. COMPUTER NETWORKING HARDWARE COMPONENTS.

All networks are

In order to continue enjoying our site, we ask that you confirm your identity as a human. Thank you very much for your cooperation.

1.Wide Area Network-A Wide Area Network (WAN) is a computer network that covers a large geographicalarea such as a city, country or spans even intercontinental distances, using acommunications channel that combines many types of media such as telephone lines,cables and airwaves. A WAN often uses transmission facilities provided by commoncarriers, such as telephone companies.2.Enterprise Private Network (EPN)-An Enterprise Private Network is a type of network that is designed for privatecommunication within an organization. This type of network is only accessible fromwithin the enterprise.

3.Virtual Private Network (VPN)-A Virtual Private Network is a type of network that makes use of existing private orpublic network infrastructure to provide a secured network connection. This is oftenachieved by creating an encrypted tunnel for secured end-to-end connectivity.Why do we need a Network?The network offers the following advantages:

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 3 pages?

Upload your study docs or become a

Course Hero member to access this document

Tags

Computer network, Wide area network, Enterprise Private Network