1 Which text encoding scheme uses 7 bits to represent each character? A ASCII B Unicode C UTF-8 D UTF-16
2 Which gate is equivalent to an AND gate followed by a NOT gate? A NAND gate B NOR gate C XOR gate D XNOR gate
3 The study of computer science includes both: A natural science and design science B only social science C only chemical science D only biological science
4 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
5 The output of an XOR gate is HIGH when: A Both inputs are LOW B Both inputs are HIGH C Inputs are different D Inputs are the same
8 How many bits are used in UTF-8 to represent a character? A 8, 16, or 24 bits B 8, 16, 24, or 32 bits C 16 or 32 bits D 32 bits only
9 Which of the following is the best definition of a system? A A single part that works alone B A set of connected parts working together to achieve a goal C A random collection of unrelated items D A type of computer hardware
10 A full-adder circuit is formed by using: A One half-adder only B Two half-adders and one OR gate C Two OR gates and one AND gate D Three NOT gates
11 Which of the following best describes the Internet as a system? A A single computer with its own hardware and software. B A network of interconnected computers that share information using common protocols. C A software application for browsing web pages. D A type of natural system found in the environment.
13 Which of the following is NOT a component of a computer system? A Hardware B Software C Data D Weather
14 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
15 What is the process of converting analog audio to digital called? A Sampling B Rendering C Encoding D Compression
16 What is the primary objective of a system? A To create confusion B To achieve a specific goal C To waste resources D To work randomly
17 Which of the following is a disadvantage of the von Neumann architecture? A Complex design B High cost C Von Neumann bottleneck D Limited memory
18 Which of the following is a characteristic of the von Neumann architecture? A Separate memory for data and instructions B Shared memory for data and instructions C No memory D Parallel processing of data and instructions
19 Which of the following is an example of an artificial system? A A river B A forest C A computer D The human body
20 نظام اور سائنس کے مطابق، کون سی سائنس قدرتی طور پر رونما ہونے والے مظاہر سے متعلق ہے؟ A ڈیزائن سائنس B کمپیوٹر سائنس C قدرتی سائنس D سماجی سائنس
22 In the context of systems, what does 'communication' refer to? A The exchange of information between components or with the environment B The physical parts of the system C The goal of the system D The feedback loop
23 Which of the following is the hexadecimal equivalent of the decimal number 255? A FF B EE C F0 D 0F
24 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
25 Which Boolean law states that A · (B + C) = (A · B) + (A · C)? A Commutative law B Associative law C Distributive law D Identity law