Computer Science Quiz

Consider that a disk partition using FAT-32 file system, 4-KB block size. How many disk-partition sizes up to?

• 1 TB.

• 2 TB.

• 8 TB.

• 4 TB.

Assume that jobs A-D arrive in the ready queue in quick succession and have the CPU cycle requirements listed below. Using the Shortest Remaining Time Next algorithm, the Waiting time of job A is..... Arrival time: 0 1 2 3 Job: A B C D CPU cycle: 6 3 1 4

• 14

• 1

• 0

• 8

The physical disk of the original IBM PC have 65535 cylinders, 16 heads, 63 sectors per track, and 512 bytes per sector, the largest possible disk is....

• 64 GB

• 63 GB

• 31.5 GB

• 33.5 GB

If M denotes the number of memory locations and N denotes the word size, then an expression that denotes the storage capacity is.

• 2M+N

• M+N

• M*N

• 2M-N

How many address bits are required to represent a 128KB memory?

• 14 bits

• 16 bits

• 17 bits

• 15 bits

A computer has 32 bits virtual addresses and 4 KB pages. How many entries are needed for two level paging, with 10 bits in each part?

• 4096

• 1023

• 1024

• 4095

Assume that Process A with 4 threads, Process B with 3 threads are running local scheduling, 50-msec for process quantum and threads run 10-msec/CPU burst. Which of possible scheduling for user level threads are true?

• B1, A1, B2, A2, B3, A3, B1, A4,

• B1, B2, B3, B1, B2, A1, A2, A3, A4, A1, B1, B2, ...

• A1, A2, B1, B2, B3, A1, A2, ...

• A1, B1, A2, B2, A3, B3, A4, B1, ...

The decimal value of the ASCII letter 'A' is 65. Its Hexa value is....

• 41

• 40

• 42

• 39

Which of the following process state transitions are illegal?

• running -> ready

• blocked -> running

• blocked -> ready

• ready -> running

How many types of modes of I/O Data Transfer?

• 5

• 3

• 6

• 4