1. Slotted ALOHA

divide time into discrete intervals

require global time synchronization

both (a) and (b)

none of these

2. Working of the WAH generally involves

telephone lines

micro waves

satellites

All of these

3. Which of the following program is used to copy files to or from another using time sharing system over a single link ?

VMTP

TFTP

UUCP

UART

4. A station in a network forward incoming packets by placing them on its shortest output queue. What routing algorithm is being used ?

Hot potato routing

Floding

Static routing

Delta routing

5. Four bits are used for packed sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size ?

4

8

15

16

6. Which of the following digits are known as the terminal number of the network user address

5-7

1-4

8-12

13-14

7. Which of the following digits are known as the area code of the network user address (NUA) ?

5-7

1-4

8-12

13-14

8. How many digits of the DNICC (Data Network Identiication Code) identify the country ?

First three

First four

First five

First six

9. How many digits of the network user Address are known as the DNIC (Data Network Identiication Code) ?

First three

First four

First five

First seven

10. Establishing a virtual connection is virtually equivalent to

connecting as virtual memory

physically connecting a DTE and DCE

placing a telephone call prior to a conversion

placing a modem prior to a conversion