Which OSI layer is responsible for end-to-end communication and error handling? A. Network Layer B. Transport Layer C. Session Layer D. Data Link Layer Correct answer is: B. Transport Layer 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
In which network topology is a single central point failure (e.g., via a DoS—Denial of Service attack on the hub) most likely to disrupt the entire network? A. Star Topology B. Mesh Topology C. Bus Topology D. Ring Topology Correct answer is: A. Star Topology 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
The type of cryptography in which one key is public and the other is private is called? A. Asymmetric Key cryptography B. Hash cryptography C. Symmetric Key cryptography D. Quantum cryptography Correct answer is: A. Asymmetric Key cryptography 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
A. Asymmetric Key cryptography B. Hash cryptography C. Symmetric Key cryptography D. Quantum cryptography
Which of the following is not a layer in OSI Model? A. Physical Layer B. Process Layer C. Transport Layer D. Network Layer Correct answer is: B. Process Layer 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
Which protocol or service is used terminal connection service? to remote log into another computer? A. FTP B. UDP C. RARP D. Telnet Correct answer is: D. Telnet 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
Which of the following is not a routing protocol? A. ICMP B. RIP C. BGP D. OSPF Correct answer is: A. ICMP 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
What defines the rule for communication between Computers? A. Hardware B. Operating System C. Protocol Network D. Software Correct answer is: C. Protocol Network 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
The HTTP protocol works on which port by default? A. 21 B. 80 C. 25 D. 443 Correct answer is: B. 80 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
Which of the following is NOT a valid Microsoft Excel file format? A. .xlsx B. .csv C. .xls D. .pdf Correct answer is: D. .pdf 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
Which computer architecture has one instruction stream and one data stream? A. SISD B. MIMD C. MISD D. SIMD Correct answer is: A. SISD 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
An expression is a collection of? A. Constants only B. Variables only C. Operators only D. Constants, variables and operators Correct answer is: D. Constants, variables and operators 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
MAC is a? A. Operating System B. Utility Program C. multimedia D. windows Correct answer is: A. Operating System 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
In MS Word, Artistic Effects can be applied to pictures using which tool? A. WordArt B. SmartArt C. Picture Tools D. Drawing Tools Correct answer is: C. Picture Tools 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
In MS Word, a table of contents can be inserted from? A. Home Tab B. References Tab C. Layout Tab D. Design Tab Correct answer is: B. References Tab 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
A computer primarily uses which number system? A. Decimal B. Binary C. Hexadecimal D. Octal Correct answer is: B. Binary 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
Which of the following is not a valid data type in C/C++? A. Long Long B. long double C. Using float D. Wchar-t Correct answer is: C. Using float 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
In a relational database, a table is also called? A. Tuple B. Relation C. Attribute D. Domain Correct answer is: B. Relation 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
An External database is referred to? A. create in word B. Created DMBS Package C. Database created in EXCEL D. Database on external server Correct answer is: D. Database on external server 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
A. create in word B. Created DMBS Package C. Database created in EXCEL D. Database on external server
In operating systems, checkpoints are used for? A. Security purposes B. Recovery process C. Performance enhancement D. Memory management Correct answer is: B. Recovery process 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
Deadlock in an operating system occurs when? A. A process terminates unexpectedly B. A process waits indefinitely for resources held by other processes C. CPU is overloaded D. Memory is insufficient Correct answer is: B. A process waits indefinitely for resources held by other processes 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
A. A process terminates unexpectedly B. A process waits indefinitely for resources held by other processes C. CPU is overloaded D. Memory is insufficient
ALU perform? A. Storage operations B. Arithmetic and logical operations C. Control Operations D. Input/Output operations Correct answer is: B. Arithmetic and logical operations 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
A. Storage operations B. Arithmetic and logical operations C. Control Operations D. Input/Output operations
An excel workbook is a collection of? A. Workbooks B. Worksheet C. Charts D. Both B AND C Correct answer is: D. Both B AND C 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
Which function is used to calculate the total sum of given values? A. AVERGE () B. SUM () C. COUNT () D. 1 MIN () Correct answer is: B. SUM () 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
Which function is used the highest number in excel is found using the? A. MAX () B. MIN () C. AVERGE () D. COUNT () Correct answer is: A. MAX () 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
What is the function of the VLOOKUP function in Excel? A. To perform a horizontal lookup B. To perform a calculation C. To perform a vertical lookup and return a value based on specific criteria D. To format data Correct answer is: C. To perform a vertical lookup and return a value based on specific criteria 📖 Read Detailed Explanation → Computer Science MCQS Past Paper Computer Operator in Revenue Department Leave a Comment | Umar
A. To perform a horizontal lookup B. To perform a calculation C. To perform a vertical lookup and return a value based on specific criteria D. To format data