Question

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Answer 1

Answer:

Explanation:

1)Hub,Switch,Router,Bridge,Gateway,Modem.

2)Protocols:

A network protocol is an established set of rules that determine how data is transmitted between different devices in the same network. Essentially, it allows connected devices to communicate with each other, regardless of any differences in their internal processes, structure or design.

3)11 Types of Networks in Use Today

Personal Area Network (PAN) ...

Local Area Network (LAN) ...

Wireless Local Area Network (WLAN) ...

Campus Area Network (CAN) ...

Metropolitan Area Network (MAN) ...

Wide Area Network (WAN) ...

Storage-Area Network (SAN) ...

System-Area Network (also known as SAN)

Passive Optical Local Area Network(POLAN)

Enterprise Private Network(EPN)

Virtual Private Network(VPN)

4)Node:

A node is a basic unit of a data structure, such as a linked list or tree data structure. Nodes contain data and also may link to other nodes. Links between nodes are often implemented by pointers.

5)coaxial cable, twisted-pair cable, and fiber-optic cable.

6)Basically, a modem is used for transmitting and receiving data over a communication channel, such as twisted-pair telephone lines, coaxial cables, and optical fibres. Currently the purpose of a modem is to convert a computer's data stream to analog format so that it can be transmitted over the analog telephone line.

7)Technically speaking, internal modems are internal to a computer (usually an add on card- placed in a PCI/PCIe slot) whereas external is external ( externally connected, usually through ethernat/lan port of the computer or USB port of the computer.

8)Hubs are at a disadvantage against switches in networking because hubs are unable to differentiate between the devices on the network. If one computer is trying to reach another on a hub-based network, the computer will send the message to every other computer on the network, consuming bandwidth for each transfer.

9)Its job is to regenerate the signal over the same network before the signal becomes too weak or corrupted so as to extend the length to which the signal can be transmitted over the same network. An important point to be noted about repeaters is that they do not amplify the signal.

10)Fiber-Optic Cable

11)A hub works on the physical layer (Layer 1) of OSI model while Switch works on the data link layer (Layer 2). ... A switch can join multiple computers within one LAN, and a hub just connects multiple Ethernet devices together as a single segment. Switch is smarter than hub to determine the target of the forwarding data.

12)Guided transmission media:

• Twisted pair

• Coaxial cable

• Optical fiber

Unguided transmission media:

• Radio