1 Which of the following is NOT a type of computing system? A Personal computer B Supercomputer C Embedded system D Natural ecosystem
3 What is the Internet an example of? A A natural system B A computing system C A biological system D A psychological system
4 Which method is used to represent negative integers in binary? A Sign-magnitude B One's complement C Two's complement D ASCII encoding
6 The output of an OR gate is 0 when: A Any input is 1 B All inputs are 0 C All inputs are 1 D One input is 1 and the other is 0
7 The Internet is considered a system because it has: A Components and interactions B Only hardware C No protocols D No users
8 Which of the following is an example of a knowledge system? A River B Expert system C Biological cell D Chemical reaction
9 In a computer system, what does the control unit do? A Performs arithmetic operations B Directs the operation of the processor C Stores data permanently D Connects to the internet
10 What does the control unit do in a computer? A Performs calculations B Directs operations of the computer C Stores data permanently D Displays images
11 Which of the following is the binary representation of the decimal number 13? A 1011 B 1101 C 1110 D 1001
13 What is the main purpose of simplifying a Boolean function? A To increase the number of logic gates B To reduce the number of logic gates and connections C To make the circuit slower D To change the truth table
14 The output of an AND gate is 0 when: A Both inputs are 1 B Any input is 0 C Both inputs are 0 D Any input is 1
15 In a von Neumann computer, which component fetches and decodes instructions? A Control Unit B Memory C Monitor D Keyboard
17 In Boolean algebra, which logic gate performs the AND operation? A OR gate B NOT gate C AND gate D XOR gate
18 Which statement is a characteristic of von Neumann architecture? A Instructions and data are stored in the same memory B There is no central memory C It cannot execute stored programs D It has no control unit
19 What does the ALU in the von Neumann architecture do? A Stores data permanently B Performs arithmetic and logic operations C Controls the flow of data D Manages input and output devices
20 The output of a NOR gate is 1 when: A All inputs are 1 B All inputs are 0 C Any input is 1 D Any input is 0
21 In computers, images are stored as a grid of small dots called: A Pixels B Vectors C Samples D Frames
22 Which gate is used to produce the sum output in a half-adder? A AND gate B OR gate C XOR gate D NAND gate
24 Which text encoding scheme uses 7 bits to represent each character? A ASCII B Unicode C UTF-8 D UTF-16
25 In two's complement representation, what is the 8-bit binary representation of -5? A 11111011 B 11111010 C 00000101 D 10000101