Results for "Past Questions"

COS 101 Class Note PDF – Download Free

Title: COS 101 Class Note PDF – Download Free URL: https://studentsdash.com/cos-101-class-note-pdf-download-free/ -------------------------------------------------- COS 101 Class Note PDF – Download Free COS 101 is one of the core courses for students in computing and science-related departments, especially at the 100 level. To help students understand the course better and prepare well for tests and exams, Studentsdash has provided a properly arranged COS 101 Class Note PDF . This material is written in simple and clear language, making it easy for beginners to follow and revise. What This COS 101 Class Note Offers The COS 101 class note is carefully prepared to guide students through important concepts taught during lectures. It follows the standard school curriculum and is suitable for daily reading and exam preparation. COS 101 Course Outline COS 101 Course Outline for 100L Students – Ebonyi State University (EBSU) Why You Should Download This COS 101 PDF Easy to read and well arranged Suitable for 100 level students Helps with tests and examinations Covers important lecture topics Free to download on Studentsdash Download COS 101 Class Note PDF COS 101 Studentsdash Download Download 5 MB Get More Study Materials on Studentsdash Studentsdash provides class notes, past questions, and academic guides to help students succeed academically. For help or inquiries, reach us via WhatsApp: +2347075012541 Telegram: t.me/studentsdash

COS 101 Exam Questions Most Repeated Questions and Answer (PDF)

Title: COS 101 Exam Questions Most Repeated Questions and Answer (PDF) URL: https://studentsdash.com/cos-101-exam-questions/ -------------------------------------------------- PART 1 Studentsdash COS 101 Past Questions Pdf Download COS 101 PDF FOLLOW STUDENTSDASH WHATSAPP CHANNEL PART 2 1. What are the three distinct units of a functional unit of a computer system? Answer: The input unit, central processing unit, and output unit. 2. Name four functions that a computer performs. Answer: Takes data as input Stores data/information when use is required Processes data and converts it into useful information Outputs the information 3. What are the two basic components a computer system is generally made up of? Answer: Hardware components and software components. 4. List five characteristics of a computer. Answer: Diligence, speed, accuracy, storage, versatility. 5. List five advantages of using computers. Answer: Computers are very fast. Computers are very accurate. Computers have much more storage capacity than human beings. A computer is free from monotony, tiredness, and lack of concentration. Computers can work continuously without creating any error and boredom. 6. What are the five computer generations? Answer: First Generation: 1946–1959 Second Generation: 1959–1965 Third Generation: 1965–1971 Fourth Generation: 1971–1980 Fifth Generation: 1980-onwards 7. What are the three classifications of computers based on how a computer works? Answer: Analogue, digital, and hybrid computers. 8. What are the two classifications of computers based on purpose? Answer: Special-purpose and general-purpose computers. 9. What are the benefits of branded computers? Answer: Systems engineered by vendor in its entirety Consistent performance and compatibility Certified by third-party vendors ISO compliance Bundled software and drivers Financial stability of vendor On-site service 10. What is data? Answer: Data is a representation of facts, concepts, or instructions in a formalized manner suitable for communication, interpretation, or processing by humans or machines. 11. What is the difference between analogue and digital signals? Answer: Analogue signal is a continuous waveform that changes over time, while a digital signal is a non-continuous, discrete-time signal. 12. What is the function of the backspace key on a keyboard? Answer: It deletes the character before the current cursor position or the last character in a line. 13. What is the function of the control section within the Central Processing Unit (CPU)? Answer: It directs the flow of operations, interprets program instructions, and coordinates other CPU parts. It does not process actual operations. 14. What role does the arithmetic-logic section play in a computer system? Answer: It performs arithmetic operations (addition, subtraction, multiplication, division) and logic operations (comparison, conditions, etc.). 15. What are the four purposes of the internal storage section? Answer: Retain data during processing Hold intermediate results Store processing results Store program instructions 16. What is the function of the output unit of a computer? Answer: It receives processed data from the CPU and sends it to output devices like monitors, printers, or storage devices. 17. What is the Abacus? Answer: A 5,000-year-old device used for computations using sliding beads on a rack. 18. What is the Difference Engine? Answer: A mechanical calculator designed to compile and print mathematical tables and perform calculations. 19. What are the characteristics of first-generation computers? Answer: Used vacuum tubes, were large, unreliable, slow, consumed much power, supported only machine language, and generated a lot of heat. 20. What are the characteristics of fifth-generation computers? Answer: Use ULSI technology, have artificial intelligence, support natural language and parallel processing, are compact, fast, and affordable. 21. What is a special-purpose computer? Answer: A computer designed for a specific task like traffic control, navigation, or robotics. 22. What is the difference between branded and cloned computers? Answer: Branded computers are made by well-known companies with good support. Cloned computers are assembled from parts, cheaper, and customizable but may lack support. 23. What is information? Answer: Organized or classified data that has meaning and is useful in making decisions or taking actions. 24. What is the function of the Windows key on a keyboard? Answer: It opens the Start menu in Windows operating systems and was first introduced before Windows 95. FOLLOW STUDENTSDASH WHATSAPP CHANNEL PART 3 Flashcards: Fundamentals of Computer Systems Question : Definition of a Computer System Answer : An electronic data processing machine which accepts and stores input data (raw facts and figures), processes the data input, and outputs the processed data (information) in a required format. Question : Functional Units of a Computer System Answer : Input unit, central processing unit, and output unit. Question : Input Unit Answer : A computer must receive both data and program statements to function properly and be able to solve problems. Input devices accomplish feeding data and programs to a computer. Question : Central Processing Unit (CPU) Answer : The brain of a computer system that transfers data to one or various processing units. It consists of a control section, an arithmetic-logic section, and an internal storage section. Question : Control Section Answer : The control section directs the flow of traffic and maintains order within the computer. Question : Arithmetic-Logic Section (ALU) Answer : The arithmetic-logic section performs arithmetic operations, such as addition, subtraction, multiplication, and division. Question : Internal Storage Section Answer : The internal storage section serves for retention. Question : Output Unit Answer : As program statements and data are received by the CPU from an input device, the results of the processed data are sent from the CPU to an output device. Question : Hardware Components Answer : The general collection of all physical parts of a computer system. Computer hardware is what you can physically touch. Question : Software Components Answer : A software component is a collection of instructions that enable the user to interact with a computer, its hardware, or perform tasks. Question : Advantages of using a computer Answer : ○ A very fast machine ○ Very accurate ○ Has much more storage capacity than human beings ○ Free from monotony, tiredness, and lack of concentration ○ Can work continuously without creating any error and boredom ○ Very flexible in performing jobs ○ A versatile machine Question : Disadvantages of using a computer Answer : ○ Has no intelligence of its own ○ Cannot take any decision on its own ○ Cannot perform functions except as instructed ○ Has no feelings or emotions Question : First-generation computers Answer : ○ Time period: 1946–1959 ○ Vacuum tube based Question : Second-generation computers Answer : ○ Time period: 1959–1965 ○ Transistor based Question : Third-generation computers Answer : ○ Time period: 1965–1971 ○ Integrated circuit based Question : Fourth-generation computers Answer : ○ Time period: 1971–1980 ○ VLSI Microprocessor based Question : Fifth-generation computers Answer : ○ Time period: 1980–onwards ○ ULSI Microprocessor based Question : Analogue Computer Answer : A computer that uses the continuously changeable aspects of physical phenomena such as electrical, mechanical, or hydraulic quantities to model the problem being solved. Question : Digital Computers Answer : Digital computers use the binary arithmetic concept where numbers and letters are represented by combinations of zeros and ones (0 and 1). Question : Hybrid Computers Answer : Hybrid computers possess the attributes of both analogue and digital computers. Question : Special-Purpose Computers Answer : A special-purpose computer is designed for a specific application. Question : General-Purpose Computers Answer : General-purpose computers are used to handle a variety of tasks. Question : Mainframe computers Answer : Very huge computers with large memory and processing capabilities and can support hundreds of users simultaneously. Question : Minicomputers Answer : Medium-sized computers much larger than personal computers and support multiple users simultaneously. Question : Microcomputers Answer : Can support only one user at a time. Question : Supercomputers Answer : Supercomputers are the fastest type of computer and can execute programs very quickly. Question : Benefits of Branded Computers Answer : Systems engineered by vendor in its entirety, resulting in consistent performance and compatibility. Question : Drawbacks of Branded Computers Answer : Higher price. Question : Benefits of Cloned/Assembled Computers Answer : Lower price. Question : Drawbacks of Cloned/Assembled Computers Answer : Multi-vendor responsibility for part warranty. Question : Data Answer : Data can be defined as a representation of facts, concepts, or instructions in a formalized manner, suitable for communication, interpretation, or processing by human or electronic machine. Question : Information Answer : Information is organized or classified data so that it has some meaningful value to the receiver. Question : Analogue Signal Answer : An analogue signal is a kind of continuous waveform that changes over time. Question : Digital Signals Answer : A digital signal is a non-continuous, discrete-time signal. VIEW MORE COS 101 PAST QUESTIONS

COS 102 Past Questions and Answers

Title: COS 102 Past Questions and Answers URL: https://studentsdash.com/cos-102-past-questions-and-answers/ -------------------------------------------------- csc 102 COS 102 1. What is the primary function of an operating system? A) To manage hardware and software resources B) To compile code C) To connect to the internet D) To create databases Answer: A) To manage hardware and software resources 2. In a flowchart, what shape is used to represent a decision? A) Rectangle B) Oval C) Diamond D) Parallelogram Answer: C) Diamond 3. Which of the following is NOT a programming language? A) Python B) HTML C) Java D) SQL Answer: B) HTML 4. In a relational database, what is the purpose of a primary key? A) To uniquely identify a record in a table B) To create relationships between tables C) To sort data D) To store images Answer: A) To uniquely identify a record in a table 5. What does the acronym CPU stand for? A) Central Processing Unit B) Computer Personal Unit C) Central Programming Unit D) Control Processing Unit Answer: A) Central Processing Unit 6. Which of the following data structures uses LIFO (Last In First Out) principle? A) Queue B) Stack C) Array D) Linked List Answer: B) Stack 7. In HTML, which tag is used to create a hyperlink? A) <link> B) <href> C) <a> D) <hyperlink> Answer: C) <a> 8. Which command is used to compile a C program? A) run B) execute C) gcc D) make Answer: C) gcc 9. In a spreadsheet application, what function is used to calculate the average of a range of cells? A) SUM() B) AVG() C) AVERAGE() D) MEAN() Answer: C) AVERAGE() 10. What does GUI stand for in computer terminology? A) General User Interface B) Graphical User Interface C) Global User Interface D) Graphical Utility Interface Answer: B) Graphical User Interface 11. Which of the following is a characteristic of an object-oriented programming language? A) Functions B) Inheritance C) Procedures D) Assembly Answer: B) Inheritance 12. In CSS, which property is used to change the text color of an element? A) font-color B) text-color C) color D) style Answer: C) color 13. What is the main purpose of a firewall? A) To speed up internet connection B) To protect a network from unauthorized access C) To enhance graphics performance D) To manage database transactions Answer: B) To protect a network from unauthorized access 14. Which of the following is an example of a non-volatile memory? A) RAM B) Cache C) ROM D) Register Answer: C) ROM 15. In programming, what is a loop used for? A) To perform calculations B) To repeat a block of code C) To define functions D) To manage memory Answer: B) To repeat a block of code 16. What is the result of the expression 5 + 2 * 3 in most programming languages? A) 21 B) 11 C) 17 D) 15 Answer: B) 11 17. In Python, how do you create a comment? A) // This is a comment B) /* This is a comment */ C) # This is a comment D) — This is a comment Answer: C) # This is a comment 18. Which command in SQL is used to retrieve data from a database? A) SELECT B) GET C) FETCH D) RETRIEVE Answer: A) SELECT 19. What is the default file extension for a Python file? A) .java B) .py C) .html D) .txt Answer: B) .py 20. In computer networks, what does IP stand for? A) Internet Protocol B) Internal Process C) Internet Program D) Interface Protocol Answer: A) Internet Protocol 21. Which of the following is an example of a primary key in a database? A) Employee ID B) Employee Name C) Employee Address D) Employee Phone Number Answer: A) Employee ID 22. In programming, what does API stand for? A) Application Programming Interface B) Automated Programming Interface C) Application Process Integration D) Automated Process Interface Answer: A) Application Programming Interface 23. Which HTML tag is used for the largest heading? A) <h1> B) <h6> C) <title> D) <header> Answer: A) <h1> 24. What is the purpose of the return statement in a function? A) To define the function B) To stop the program C) To send a value back to the caller D) To execute the next statement Answer: C) To send a value back to the caller 25. In CSS, which property is used to set the background color of an element? A) background-color B) color C) bg-color D) background Answer: A) background-color 26. Which of the following best describes a “bit”? A) A unit of data that can be 0 or 1 B) A unit of data that can be 0 to 255 C) A unit of data that represents a character D) A unit of storage capacity Answer: A) A unit of data that can be 0 or 1 27. What is the primary function of the operating system’s kernel? A) To manage hardware B) To provide user interfaces C) To run applications D) To manage files Answer: A) To manage hardware 28. In SQL, which command is used to delete data from a table? A) DELETE B) REMOVE C) DROP D) TRUNCATE Answer: A) DELETE 29. Which of the following is NOT a type of software? A) Operating system B) Compiler C) Hardware D) Application Answer: C) Hardware 30. In Python, how do you define a function? A) function myFunction(): B) def myFunction(): C) create myFunction(): D) func myFunction(): Answer: B) def myFunction(): 31. Which of the following is an advantage of using a version control system? A) It decreases collaboration B) It tracks changes to code C) It limits access to code D) It simplifies the code structure Answer: B) It tracks changes to code 32. In a spreadsheet, what symbol is used to denote a formula? A) = B) + C) – D) # Answer: A) = 33. Which data structure is best suited for implementing a queue? A) Array B) Linked List C) Stack D) Tree Answer: B) Linked List 34. In an if statement, what does the “else” clause do? A) Executes if the condition is true B) Executes if the condition is false C) Always executes D) Compiles the code Answer: B) Executes if the condition is false 35. In the context of databases, what is normalization? A) The process of ensuring data is structured properly B) The process of indexing data C) The process of deleting duplicate records D) The process of storing data in multiple locations Answer: A) The process of ensuring data is structured properly 36. Which of the following is a characteristic of a relational database? A) Data is stored in a flat file B) Data is organized into tables C) Data is unstructured D) Data is stored as documents Answer: B) Data is organized into tables 37. In a computer network, what does LAN stand for? A) Local Area Network B) Large Area Network C) Long Area Network D) Local Access Network Answer: A) Local Area Network 38. What does the term “debugging” refer to in programming? A) Writing code B) Testing for errors and fixing them C) Compiling the code D) Documenting the code Answer: B) Testing for errors and fixing them 39. Which of the following is an example of a data type? A) Variable B) Function C) String D) Class Answer: C) String 40. In programming, what does the term “syntax” refer to? A) The meaning of a statement B) The structure of code C) The execution speed D) The variable types Answer: B) The structure of code 41. In a flowchart, what shape represents the start or end of a process? A) Rectangle B) Oval C) Diamond D) Parallelogram Answer: B) Oval 42. Which of the following is NOT a type of loop? A) For loop B) While loop C) Repeat loop D) Do-while loop Answer: C) Repeat loop 43. What is the purpose of a constructor in object-oriented programming? A) To initialize an object B) To destroy an object C) To compile the code D) To define a class Answer: A) To initialize an object 44. In CSS, which selector is used to select an element by its ID? A) .id B) #id C) *id D) id Answer: B) #id 45. What type of database model uses a tree structure? A) Hierarchical B) Network C) Relational D) Object-oriented Answer: A) Hierarchical 46. Which of the following is a valid variable name in most programming languages? A) 1stVariable B) my-variable C) myVariable D) my variable Answer: C) myVariable 47. What does the term “API” allow developers to do? A) Develop operating systems B) Interact with other software applications C) Create databases D) Design user interfaces Answer: B) Interact with other software applications 48. In SQL, which clause is used to filter results? A) WHERE B) SELECT C) FROM D) JOIN Answer: A) WHERE 49. In a binary tree, what is the maximum number of children a node can have? A) 1 B) 2 C) 3 D) Any number Answer: B) 2 50. In HTML, which tag is used to create an unordered list? A) <ol> B) <ul> C) <list> D) <li> Answer: B) <ul>

COS 107 ( CSC 107 ) Past Questions and Answers 2024

COS 201 Past Questions and Answers

Title: COS 201 Past Questions and Answers URL: https://studentsdash.com/cos-201-past-questions-and-answers/ -------------------------------------------------- COS 201 Past Questions and Answers – Computer Programming 1

CSC 101 Past Questions and Answers

Title: CSC 101 Past Questions and Answers URL: https://studentsdash.com/csc-101-past-questions-and-answers/ -------------------------------------------------- Hey, as you may know the Ebonyi State University(Ebsu) year one exam is CBT BASED which means it will be written with computer, and today we will be drop only 11 Past Questions here to practice more use our STUDENTSDASH Practice code to Practice more on STUDENTSDASH APP . EBSU CSC 101 PAST QUESTIONS Answers after the questions. The use of computer to carry out crime related activities is called _ A. Stealing B. Automated Stealing C. Cybercrime D. Tech-based bugle Transistors are special features of which generation of computer classification? A. First B. Second C. Third D. Fourth _ is the technology used in first generation A. Transistor B. Integrated circuit C. Large scale integrated circuit D. Vaccum tube _ is the technology for the Third generation of Computer classification is associated A. Vaccum Tube B. Transistors C. Integrated Circuit D. None of the above What year was vacuum tube invented? A. 1995 – 1964 B. 1964 – 1972 C. 1946 D. 1990 to date Who is the father of Computers? a) James Gosling b) Charles Babbage c) Dennis Ritchie d) Bjarne Stroustrup Which of the following is the correct abbreviation of COMPUTER? a) Commonly Occupied Machines Used in Technical and Educational Research b) Commonly Operated Machines Used in Technical and Environmental Research c) Commonly Oriented Machines Used in Technical and Educational Research d) Commonly Operated Machines Used in Technical and Educational Research Which of the following is the correct definition of Computer? a) Computer is a machine or device that can be programmed to perform arithmetical or logic operation sequences automatically b) Computer understands only binary language which is written in the form of 0s & 1s c) Computer is a programmable electronic device that stores, retrieves, and processes the data d) All of the mentioned What is the full form of CPU? a) Computer Processing Unit b) Computer Principle Unit c) Central Processing Unit d) Control Processing Unit Which of the following language does the computer understand? a) Computer understands only C Language b) Computer understands only Assembly Language c) Computer understands only Binary Language d) Computer understands only BASIC Advertisement Which of the following package allows individuals to use personal computers for storing and retrieving their personal information? a) Personal assistance package b) Graphics package c) Spreadsheet package d) Animation package Which of the following computer language is written in binary codes only? a) pascal b) machine language c) C d) C# Which of the following is the brain of the computer? a) Central Processing Unit b) Memory c) Arithmetic and Logic unit d) Control unit Which of the following is not a characteristic of a computer? a) Versatility b) Accuracy c) Diligence d) I.Q. Which of the following is the smallest unit of data in a computer? a) Bit b) KB c) Nibble d) Byte Which of the following unit is responsible for converting the data received from the user into a computer understandable format? a) Output Unit b) Input Unit c) Memory Unit d) Arithmetic & Logic Unit Which of the following monitor looks like a television and are normally used with non-portable computer systems? a) LED b) LCD c) CRT d) Flat Panel Monitors Which of the following is not a type of computer code? a) EDIC b) ASCII c) BCD d) EBCDIC Which of the following part of a processor contains the hardware necessary to perform all the operations required by a computer? a) Controller b) Registers c) Cache d) Data path Which of the following is designed to control the operations of a computer? a) User b) Application Software c) System Software d) Utility Software Which of the following device use positional notation to represent a decimal number? a) Pascaline b) Abacus c) Computer d) Calculator Which of the following is used in EBCDIC? a) Super Computers b) Mainframes c) Machine Codes d) Programming Which of the following are physical devices of a computer? a) Hardware b) Software c) System Software d) Package Which of the following defines the assigned ordering among the characters used by the computer? a) Accumulation b) Sorting c) Collating Sequence d) Unicode Which of the following storage is a system where a robotic arm will connect or disconnect off- line mass storage media according to the computer operating system demands? a) Magnetic b) Secondary c) Virtual d) Tertiary Which of the following is known as the interval between the instant a computer makes a request for the transfer of data from a disk system to the primary storage and the instance the operation is completed? a) Disk utilization time b) Drive utilization time c) Disk access time d) Disk arrival time Which of the following devices provides the communication between a computer and the outer world? a) Compact b) I/O c) Drivers d) Storage Which of the following are the input devices that enable direct data entry into a computer system from source documents? a) System Access devices b) Data acquiring devices c) Data retrieving devices d) Data Scanning devices Which of the following is the device used for converting maps, pictures, and drawings into digital form for storage in computers? a) Image Scanner b) Digitizer c) MICR d) ScServe Which of the following can access the server? a) Web Client b) User c) Web Browser d) Web Server Which of the following is known as the language made up of binary-coded instructions? a) High level b) BASIC c) C d) Machine ANSWER C 2. B 3. D 4. C 5. C 6. B 7. D 8. D 9. C C 11. A 12. B 13. A 14. D 15. A 16. B 17. C 18. A 19. D C 21. B 22. B 23. A 24. C 25. D 26. C 27. B 28. D 29. B 30. A 31. D CSC 101 Past Questions 1- Computer Science seeks to develop algorithms for problem solving. TRUE or FALSE? Answer TRUE Advertisement 2- What is the full meaning of the acronym ALU? Answer Arithmetic and Logic Unit 3- The highest digit in a given number base N is given by the formula .. Answer N – 1 4- The table that shows the possible combination of inputs and outputs to a logic gate is …. Answer Truth Table 5- Another name for “base 2 ” is Answer Binary 6- The two basic components of the computer system are .. .. and .. Answer Software and Hardware 7- Which of the following is not an attribute of computer system? versatility, accuracy, monotony and speed .. Answer Monotony 8- The major characteristics of second generation computers is … Answer The use of electronic switches which based on discrete diode and transistor technology 9- The fourth generation computers existed between the year1971-1980; TRUE or FALSE.. Answer TRUE 10- In computer field VLSIC stands for… Answer Very Large Scale Integrated Circuit 11- The two classification of computer based on purpose are general purpose and … Answer Special purpose Types of computer based on purpose General purpose Special purpose Classification of computers according to purpose super computers 2.mainframe computers minicomputers microcomputers 5.workstation computer server computer 12- The two types of booting are and ….. Answer 1.Cold booting 2. warm booting 13- Computer peripherals are classified into… ..and…. Answer Input device and Output Device 14- The language the computer understands is called … Answer Machine language 15- Operating system is an example of … .. software Answer System software 16- The computer primary memory whose content is VOLATILE is .. Answer RAM 17- The manipulation of data by computers into more useful form is called data;.. Answer Processing 18- The linkage of computers and other devices for the purpose of sharing information is called Computer;.. Answer Network VIEW MORE

CSC 102 Past Questions And Answers

CSC 102 past Questions and Answers 2025

CSC 107 ( COS 107 ) Past Questions and Answers 2025

CSC 112 Past Questions and Answers

CSC 203 _ COS 203 Past Questions and Answers 2025

CSC 204 Past Question and Answers

Title: CSC 204 Past Question and Answers URL: https://studentsdash.com/csc-204-past-question-and-answers/ -------------------------------------------------- In this article we will be uploading the CSC 204 Past Question Paper and the possible solution, if the solutions are not yet complete please contact us on whatsapp . CSC 204