Set-1

• A computer network permits sharing of Resources and Information.
• The first operational computer network in the world was the ARPANET for the United States Department of Defense.
• ATM stands for Automated teller machine.
• LAN is the technology that connects the machines and people within a site in a small area.
• MAN is a network that covers geographic areas areas that are larger, such as districts or cities.
• WAN is a network that this technology connects sites that are in diverse locations.
• Ring topology is a collection of point-to-point links that may form a circle.
• The ISDN internetworking Equipment devices are Terminal Adapters(TAs), ISDN Bridges, and ISDN Routers.
• ATM networks are connection oriented.
• DHCP stands for Dynamic Host Configuration Protocol.
• Transmission media are usually categorized as guided or unguided.
• Radio cable consists of an inner copper core and a second conducting outer shealth.
• Atmosphere is not a guided medium.
• Twisted-pair, Coaxial cable and Fiber-optic are guided media.
• Local telephone system primarily uses guided media.
• The amount of uncertainty in a system of symbol is called entrophy.
• Coaxial cable has conductors with a common axis.
• A device that converts digital signals into analog signals is modem.
• All of the parts in a computer talk to each other by sending digital signals.
• If user get both local and remote echoes, every character type will appear on the screen twice.
• Outer conductor protects the coaxial cable from noise.