Informatics Practices
Write the functions of the following pieces of network hardware :
(i) Modem
(ii) Switch
Answer
(i) Modem — Modem converts digital signals to audio frequency tones which are in the frequency range that the telephone lines can transmit and it can also convert transmitted tones back to digital information.
(ii) Switch — A switch is responsible for filtering i.e., transforming data in a specific way and for forwarding packets between LAN segments. To insulate the transmission from the other ports, the switch establishes a temporary connection between source and destination and then terminates the connection once the conversation is done.
Related Questions
Write advantages and disadvantages of tree topology.
Write advantages and disadvantages of mesh topology.
"New York Avenue" is planning to expand their network in India, starting with two cities in India to provide infrastructure for distribution of their canned products. The company has planned to set up their main offices in Ahmedabad, at three different locations and have named their offices as "Work Office", "Factory" and "Back Office". The company has its Corporate Unit in Delhi. A rough layout of the same is as shown below:
Approximate distance between these offices is as follows :
From To Distance Work Office Back Office 110 m Work Office Factory 14 km Work Office Corporate Office 1280 km Back Office Factory 13 km In continuation of the above, the company experts have planned to install the following number of computers in each of their offices :
Work Office 200 Back Office 115 Factory 67 Corporate 75 (i) Suggest the kind of network required (out of LAN, MAN, WAN) for connecting each of the following offices:
- Work Office and Factory
- Work Office and Back Office
(ii) Which one of the following devices will you suggest for connecting all the computers within each of their office units ?
- Switch/Hub
- Modem
- Telephone
Global Village Enterprises has following four buildings in Hyderabad city :
Computers in each building are networked but buildings are not networked so far. The company has now decided to connect buildings also.
(a) Suggest a cable layout for these buildings.
(b) In each of the buildings, the management wants that each LAN segment gets a dedicated bandwidth i.e., bandwidth must not be shared. How can this be achieved ?