General Terms
It consists of two or more computers that are linked together.
What is a Network/Computer Network?
The physical communication schemes used by connected devices on a network.
What is Topology?
A computer network that spans a relatively small area.
What is a Local Area Network/LAN?
The model was created by the ISO to help standardize communication between computer systems. It divides communications into seven different layers, which each include multiple hardware standards, protocols, or other types of services.
What is Open Systems Interconnection/OSI Model?
The common set of rules and instructions that each computer follows when they communicate with each other.
What is a Protocol?
A way in which networks are linked together without any cable.
What is a wireless network?
This topology typically uses a network hub or switch and is common for home networks. Every device has its own connection to the hub or switch.
What is Star Topology?
Consists of two or more local-area networks (LANs).
What is WAN?
The protocols such as http, ftp, smtp, pop3, imap, dhcp, telnet reside at this layer.
What is the Application Layer?
It is an error-control protocol for data transmission that uses acknowledgements and timeouts to achieve reliable data transmission over an unreliable service. If the sender does not receive an acknowledgement before the timeout, it usually re-transmits the frame/packet until the sender receives an acknowledgement.
What is ARQ?
A type of network in which the public infrastructure and a variety of specialized security protocols are used to support private communications through the Internet.
What is a VPN?
Each device is connected to two other devices on either side and each message travels in one direction, clockwise or counterclockwise.
What is Ring topology?
This type of network is larger than local-area network (LAN) but smaller than wide-area networks (WAN). They are usually characterized by very high-speed connections using fibre optical cable or other digital media.
What is MAN?
This layer works for the transmission of data from one host to the other located in different networks. It also takes care of packet routing (selection of the shortest path to transmit the packet) from the number of routes available. The sender & receiver’s IP addresses are placed in the header by this layer.
What is the Network Layer?
The protocol for sending email whether it is from the client or in between servers for propagating the email towards the intended destination.
What is SMTP?
It is an organization's secure private local network that is not meant to be accessed by anyone outside the organization.
What is Intranet?
This topology integrates the star and bus topologies in a hybrid approach to improve network scalability.
What is Tree Topology?
A single storage device that serves files over Ethernet and is relatively inexpensive and easy to set up.
What is a NAS?
It acts as a data translator for a network and handles syntax, and processing of message data such as format conversions, compression, and encryption/decryption.
What is a Presentation Layer?
The protocol that is used for data transferring. It is known as a "stateless" protocol, meaning it doesn't acknowledge that the packets being sent have been received. For this reason, this protocol is typically used for streaming media.
What is UDP?
Consists of the provisions and policies adopted by a network administrator to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources.
What is Network Security?
It is a network topology in which devices are connected with many redundant interconnections between network nodes.
What is Mesh Topology?
A logical subnetwork that can group together a collection of devices from different physical LANs. Larger business computer networks often set up this type of network to re-partition their network for improved traffic management.
What is VLAN?
Through segmentation, Flow & Error control, this layer ensures proper data transmission. TCP and UDP protocols reside in this layer. It also adds Source and Destination port numbers in its header and forwards the segmented data to the Network Layer.
What is Transport Layer?
This protocol is used only between the client who is retrieving the email and the server where the emails are stored. With this protocol, you can search through your e-mail messages for keywords while the messages are still on the mail server.
What is IMAP?