Basic Concepts of Networking

A network is a system containing any combination of computers, printers, audio or visual display devices, or telephones interconnected by telecommunication equipment or cables: used to transmit or receive ______

A network consists of two or more computers that are linked in order to share resources, exchange files, or allow electronic ______

File sharing: Have you ever needed to access a file stored on another computer? A network makes it easy for everyone to access the same file and prevents people from accidentally creating different ______

Printer sharing: If you use a computer, chances are you also use a printer. With a network, several computers can share the same ______

Communication and collaboration: It’s hard for people to work together if no one knows what anyone else is doing. A network allows employees to share files, view other people’s work, and exchange ideas more ______

In a larger office, you can use e-mail and instant messaging tools to communicate quickly and to store messages for future ______

A Wide Area Network exists over a large area. Data travels through telephone or cable lines. Usually requires a ______

The world’s largest Wide Area Network is the ______

In mesh topology each device is connected to every other device on the network through a dedicated ______ link.

Mesh topology is reliable and robust as failure of one link doesn’t affect other links and the communication between other devices on the network is ______

Mesh topology is secure because there is a point to point link thus unauthorized access is ______

Fault detection is ______ in mesh topology.

Remote access allows users to access the same files, data, and messages even when they’re not in the ______

Data protection involves backing up your computer data ______

A network makes it easier to back up all of your company’s data on an offsite ______

Peer to Peer Networks are usually very ______

Local Area Networks (LAN) are usually confined to one ______ or a group of buildings

Data travels between network devices via network ______

In star topology, each device is connected to a central device called ______

Unlike Mesh topology, in star topology, devices must communicate through the ______

If one device wants to send data to another device in star topology, it first sends the data to the ______

Star topology is less expensive because each device only needs one I/O port and needs to be connected with the hub with one ______

In bus topology, all devices are connected to the main cable through ______ lines

Since all data is transmitted over the main cable in bus topology, there is a limit to the number of drop lines and the distance a main cable can ______

Not scalable as there is a limit of how many nodes you can connect with backbone cable. RING TOPOLOGY In ring topology each device is connected with the two devices on either side of it. There are two dedicated point to point links a device has with the devices on the either side of it. This structure forms a ring thus it is known as ring topology. If a device wants to send data to another device then it sends the data in one direction, each device in ring topology has a repeater, if the received data is intended for other device then repeater forwards this data until the intended device receives it. RING TOPOLOGY ADVANTAGES DISADVANTAGES 1. Easy to install. 1. 1. A link failure can fail the entire network as the signal will not travel forward due to failure. 2. Managing is easier as to add or remove a device from the topology only two links are required to be changed 2. Data traffic issues, since all the data is circulating in a ring. HYBRID TOPOLOGY A combination of two or more topology is known as hybrid topology. For example, a combination of star and mesh topology is known as hybrid topology. HYBRID TOPOLOGY ADVANTAGES DISADVANTAGES 1. We can choose the topology based on the requirement, for example, scalability is our concern then we can use star topology instead of bus technology. 1. Fault detection is difficult. 2. Scalable as we can further connect other computer networks with the existing networks with different topologies. 2. Installation is difficult. 3. ______

A combination of two or more topology is known as hybrid topology. For example, a combination of star and mesh topology is known as hybrid topology. HYBRID TOPOLOGY ADVANTAGES DISADVANTAGES 1. We can choose the topology based on the requirement, for example, scalability is our concern then we can use star topology instead of bus technology. 1. Fault detection is difficult. 2. Scalable as we can further connect other computer networks with the existing networks with different topologies. 2. Installation is difficult. 3. ______

A combination of two or more topology is known as ______ topology. For example, a combination of star and mesh topology is known as hybrid topology. HYBRID TOPOLOGY ADVANTAGES DISADVANTAGES 1. We can choose the topology based on the requirement, for example, scalability is our concern then we can use star topology instead of bus technology. 1. Fault detection is difficult. 2. Scalable as we can further connect other computer networks with the existing networks with different topologies. 2. Installation is difficult. 3.

In ring topology each device is connected with the two devices on either side of it. There are two dedicated point to point links a device has with the devices on the either side of it. This structure forms a ring thus it is known as ring topology. If a device wants to send data to another device then it sends the data in one direction, each device in ring topology has a repeater, if the received data is intended for other device then repeater forwards this data until the intended device receives it. RING TOPOLOGY ADVANTAGES DISADVANTAGES 1. Easy to install. 1. 1. A link failure can fail the entire network as the signal will not travel forward due to failure. 2. Managing is easier as to add or remove a device from the topology only two links are required to be changed 2. Data traffic issues, since all the data is circulating in a ring. 3. ______

We can choose the topology based on the requirement, for example, scalability is our concern then we can use star topology instead of bus technology. Fault detection is difficult. Scalable as we can further connect other computer networks with the existing networks with different topologies. Installation is difficult. ______

The structure forms a ring thus it is known as ring topology. If a device wants to send data to another device then it sends the data in one direction, each device in ring topology has a repeater, if the received data is intended for another device then repeater forwards this data until the intended device receives it. RING TOPOLOGY ADVANTAGES DISADVANTAGES 1. Easy to install. 1. 1. A link failure can fail the entire network as the signal will not travel forward due to failure. 2. Managing is easier as to add or remove a device from the topology only two links are required to be changed 2. Data traffic issues, since all the data is circulating in a ring. 3. ______