Exercise - Computer Systems
Multiple Choice Questions
1. What is the binary representation of the decimal number -43 using 8-bit two's complement notation?
- a) 10101011
- b) 11010101
- c) 11010101
- d) 11101011
2. Which of the following binary numbers corresponds to the hexadecimal number 3FA7?
- a) 0011 1111 1010 0111
- b) 1100 0011 1101 1000
- c) 1011 1100 0011 0111
- d) 0111 1011 1011 1100
3. How does the ASCII code for the character 'Z' (90 in decimal) look in binary?
- a) 01011010
- b) 01001110
- c) 01011000
- d) 01101001
4. In an 8-bit signed integer representation, what is the range of values that can be represented?
- a) -127 to 128
- b) -128 to 127
- c) 0 to 255
- d) -256 to 255
5. How many different values can be represented with a 10-bit binary number?
- a) 256
- b) 1024
- c) 512
- d) 2048
6. Which of the following is NOT a task performed by an operating system?
- a) Process Management
- b) Memory Management
- c) Email Management
- d) Device Management
7. Which type of operating system allows multiple tasks to be performed at the same time?
- a) Multiprogramming
- b) Batch Processing
- c) Real-time
- d) Single-tasking
8. Which state of a process represents that it is ready for execution but waiting for CPU time?
- a) Start State
- b) Running State
- c) Ready State
- d) Blocked State
9. What is the main purpose of a process scheduler?
- a) To manage file operations
- b) To manage CPU utilization
- c) To manage memory allocation
- d) To manage network resources