IC1402 Computer Networks & Distributed Control System B.E Question Bank : niceindia.com
Name of the College : Noorul Islam College of Engineering
University : Anna University
Degree : B.E
Department : Electronics and Instrumentation Engineering
Subject Code/Name : IC 1402 – Computer Networks & Distributed Control System
Year : 4th
Semester : 7th
Document Type : Question Bank
Website : niceindia.com
Download Model/Sample Question Paper :https://www.pdfquestion.in/uploads/ni…rol_System.pdf
NICE Computer Networks & Control System Question Paper
1.Define networks? :
A network is a set of devices (referred to as nodes) connected by media links. A node can be a computer, printer, or any other device capable of sending or/receiving data generated by other nodded on the network. The links connecting the devices are called as communication channels.
Related : Noorul Islam College of Engineering EI1001 Fiberoptic & Laser Instruments B.E Question Bank : www.pdfquestion.in/3014.html
2.Give some applications of networks? :
a)Marketing and sales,
b)Financial services,
c)Manufacturing,
d)Electronic messaging,
e)Directory services,
f)Information services,
g)Electronic data interchange,
h)Teleconferencing,
i)Cellular telephone,
j)Cable television.
3.Define line configuration? :
Line configuration refers to the way two or more communication devices attach to a link. A link is the physical communication pathway that transfers data from one device to another.
4.Define point-to-point line configuration? :
A point-to-point line configuration provides a dedicated link between two devices. The entire capacity of the channel is reserved for transmission between those two devices.
5.Define multipoint line configuration? :
A multipoint line configuration also called multidrop line configuration is one in which more than two specific devices share a single link.
6.Define topology? : What are the different types of topology?:
Topology refers to the way a network is laid out, either physically or logically. Two or more devices connect to a link; two or more links forms a topology. The different types of topology are,
a)Mesh,
b)Star,
c)Tree,
d)Bus
e)Ring
7.Define peer-to-peer and primary-secondary transmissions? :
Peer-to-peer is one where the devices share the link equally Primary-secondary is one where one device controls traffic and the others must transmit through it.
8..What is meant by Mesh topology? :
In a mesh topology every device has a dedicated point-to-point link to every other device. A fully connected mesh n/w therefore has n(n-1)/2 physical channels to link n devices.
9.What is meant by star topology? :
In a star topology, each device has a dedicated point-to-point link only to a central controller, usually called a hub. The devices are not directly linked to each other.
10. What is meant by tree topology? :
A tree topology is a variation of a star. As in a star, nodes in a tree are linked to a central hub that controls the traffic to the n/w. Every devices do not connect directly to the hub. The majority of devise connect to a secondary hub that in turn is connected to the central hub.
11.What is the difference between active hub and passive hub? :
Active hub :-
The central hub in the tree is an active hub. An active hub contains a repeater, which is hardware device that regenerates the received bit patterns before sending them out.
Passive hub :-
A passive hub provides a simple physical connection between the attached devices.
12. What is meant by bus topology? :
A bus topology is a multipoint configuration. One long cable acts as the backbone to link all devices in the network. Nodes are connected to the bus cable by drop lines and taps.
13. What is meant by Ring topology? :
In a ring topology each device has a dedicated point-to-point line configuration only with the two devices on either side of it.
14.Define transmission modes? : What are the types of transmission modes?:
Transmission mode is used to define the direction of flow between two linked devices. There are three types of transmission modes;
a)Simplex :- The communication is unidirectional, as on a one-way street. Only one of the two stations on link can transmit; the other can only receive.
b)Half-duplex :- each station can transmit and receive but not at the same time. When one device is sending the other can only receive, and vice versa.
c)Full-Duplex :- both stations can transmit and receive simultaneously.
15.What are the different categories of n/ws? :
a)LAN(Local Area Network) :- A LAN is usually privately owned and links the devices in a single office, building or campus. LANs are designed to allow resources to be shared between personal computers are workstations.
b)MAN(Metropolitan Area Network) :-A MAN is designed to extend over an entire city. It may be a single n/w such as a cable tv n/w, or it may be means of connecting a number of LANs into a larger network so that resources may be shared LAN-to-LAN as well device-to-device.
c)WAN(Wide Area Network) :-WAN provides long distance transmission of data, voice, image and video information over large geographical areas that may comprise a country, or even the whole world.