MCSE

A communications protocol used to connect computers to remote networking services including Internet service providers.

Transmission is a physical movement of information and concern issues like bit polarity, synchronization, clock etc. Communication means the meaning full exchange of information between two communication media.

Domain name system/server is used to translate the IP address into the hostname and hostname into the IP address. DNS is mostly used on the internet and the networks.

Dynamic host configuration protocol is used to assign the IP address to the networked computers and devices. DHCP is a network protocol that automatically assigns static and dynamic IP addresses from its own range.

A gateway is software or a hardware that is used to connect the local area network with the internet. A gateway is a network entrance point and a router usually works as a gateway.

WLAN or Wireless local area network is simply a type of network that does not use wired Ethernet connections for networking. WLAN uses wireless network devices such as wireless routers etc.

A subnet mask is used to determine the number of networks and the number of host computers. Every class of the IP address uses the different range of the subnet mask. Subnet masks allow the IP based networks to be divided into the sub networks for performance and security purposes.

An IP address is a unique identifier of a computer or network device on the local area network, WAN or on internet. Every host computer on the internet must have a unique IP address. IP addresses on the internet are usually assigned by the local ISPs to which users are connected.

WiFi or wireless fidelity is a base-band network technology that is used for the wireless data communication.

WiFi is a next form of the WiFi. WiMax is a high-speed broadband network technology that is designed for the corporate offices, roaming and home users.

The seven layers of the OSI are Application, Presentation, Sessions, Transport, Network, Data Link, and Physical layer.

Lightweight Directory Access Protocol is used to access the directory services from the Active directory in Windows operation systems.

SMTP - 25, POP3 - 110, IMAP4 - 143, RPC - 135, LDAP, FTP-21, HTTP-80

UDP or user datagram protocol is a connectionless protocol that is used to transfer the data without any error handling.

VPN or virtual private network is used to connect two networks by means internet. VPN uses PPTP (point-to-point tunneling protocol) and other security procedures to make a secure tunnel on internet.

VOIP or voice over internet protocol is a technology that uses IP based networks such as internet or private networks to transmit the voice communication.

Bluetooth is a short-range wireless technology that uses radio waves for communication. Many mobile phones, laptops, MP3 players have built in features of the Bluetooth.

RAS or remote access server allows you to remote dial in through the desktop computers, laptops, and GSM mobile phones.

Frame relay is high-speed data communication technology that operates at the physical and data link layers of the OSI model. Frame relay uses frames for data transmission in a network.

GSM is a short-range wireless technology and is usually used in the mobile phones, hand help devices, MP3 players, Laptops, computers and in cars.