BHARAT SEVAK SAMAJ
Time: 2 hrs. Max. Marks: 100
I. Fill in the blanks: (10 x 1 = 10)
1. UDP stands for ------------.
2. The transmission of data within a time sharing system is best suited for ------------.
3. ------------- is an example of bounded medium.
4. Coaxial cables have conductors with ---------------.
5. In a synchronous modem, the digital to analog converter sends signal to the -------.
6. Multiple repeaters in communication satellite are known as --------------.
7. X.25 standard specifies ---------------.
8. In OSI the routing is performed by -----------.
9. Binary codes are sometimes transformed in modems into ------------.
10. TCP stands for -------------.
II. State whether True or False: (10 x 1 = 10)
1. The data link layer is the layer closest to the transmission medium.
2. In the physical layer the data unit is called a frame.
3. Decryption is done in the session layer.
4. Encryption is done in the presentation layer.
5. Dialog control is a function of the session layer.
6. Mail services are available to network users through the application layer.
7. Directory services are available to network users through the session layer.
8. Node to node delivery of data is done by the data link layer.
9. Digital signals are classified as simple and complex.
10. Period refers to the amount of time.
III. Answer any SIX of the following: (6 x 10 = 60)
1. What is the difference between passive and active hub.
2. Explain Bus and Star topologies.
3. Briefly explain LAN, WAN and MAN.
4. What is a computer network? Explain its uses.
5. Briefly explain satellite communication.
6. Explain different types of transmission technologies.
7. Explain different types of modulation.
IV. Answer any ONE of the following: (1 x 20 = 20)
1. Explain the hardware requirements for setting up a network.
2. What is Internet? What are its features and advantages?