ISRO CSE 2015


Q51.

In a class B subnet, we know the IP address of one host and the mask as given below:IP address: 125.134.112.66Mask: 255.255.224.0What is the first address(Network address)?
GateOverflow

Q52.

How many bits internet address is assigned to each host on a TCP/IP internet which is used in all communication with the host?
GateOverflow

Q53.

The queue data structure is to be realized by using stack. The number of stacks needed would be
GateOverflow

Q54.

Let R_{1} and R_{2} be regular sets defined over the alphabet, then
GateOverflow

Q55.

If D_1,D_2,...D_n are domains in a relational model, then the relation is a table, which is a subset of
GateOverflow

Q56.

Let R=(A,B,C,D,E,F) be a relation scheme with the following dependencies C \rightarrow F, E \rightarrow A, EC \rightarrow D, A \rightarrow B. Which of the following is a key of R?
GateOverflow

Q57.

The maximum length of an attribute of type text is
GateOverflow

Q58.

Six files F1, F2, F3, F4, F5 and F6 have 100, 200, 50, 80, 120, 150 records respectively. In what order should they be stored so as to optimize act. Assume each file is accessed with the same frequency
GateOverflow

Q59.

A hard disk system has the following parameters :Number of tracks =500Number of sectors/track =100Number of bytes /sector =500Time taken by the head to move from one track to adjacent track =1 msRotation speed =600 rpm.What is the average time taken for transferring 250 bytes from the disk ?
GateOverflow

Q60.

A machine needs a minimum of 100 sec to sort 1000 names by quick sort. The minimum time needed to sort 100 names will be approximately
GateOverflow