Computer set 1 MCQs

Practice interactive objective questions for this topic. Select an option to instantly verify your answer and read detailed explanations.

Showing 603 questions
Q.361 What is the function of the 'sudo' command in Linux?
A Executes a command with superuser (root) privileges
B Lists all running processes
C Changes the current directory
D Creates a new user account
Discuss / Board
Q.362 Which type of malware disguises itself as legitimate software but opens a backdoor?
A Trojan horse
B Worm
C Ransomware
D Spyware
Discuss / Board
Q.363 What is a 'botnet' in cybersecurity?
A A network of compromised computers controlled by an attacker
B A software robot that indexes web pages
C A security protocol for wireless networks
D A backup system for servers
Discuss / Board
Q.364 Which attack floods a server with excessive traffic to make it unavailable?
A DDoS (Distributed Denial of Service)
B Phishing
C Man-in-the-middle
D SQL injection
Discuss / Board
Q.365 What is the standard port number for SMTP?
A 25
B 110
C 143
D 443
Discuss / Board
Q.366 Which protocol automatically assigns IP addresses to devices on a network?
A DHCP
B DNS
C FTP
D HTTP
Discuss / Board
Q.367 What does a web browser's 'Incognito mode' primarily do?
A Prevents the browser from storing local history, cookies, and site data
B Encrypts all internet traffic
C Hides IP address from websites
D Blocks all advertisements
Discuss / Board
Q.368 Which cloud service model provides a platform with tools to develop, test, and deploy applications?
A Platform as a Service (PaaS)
B Infrastructure as a Service (IaaS)
C Software as a Service (SaaS)
D Desktop as a Service (DaaS)
Discuss / Board
Q.369 Which search operator restricts results to pages where the search term appears in the title?
A intitle:
B inurl:
C filetype:
D site:
Discuss / Board
Q.370 What is a sitemap in the context of search engines?
A A file that lists all URLs on a website to help search engines crawl them
B A map showing the geographical location of the web server
C A visual representation of website traffic
D A browser extension for navigating websites
Discuss / Board
Q.371 Which of the following storage media uses flash memory and has no moving parts?
A SSD
B HDD
C DVD
D Magnetic tape
Discuss / Board
Q.372 What is the purpose of the 'Swap' space in Linux?
A Acts as virtual memory when physical RAM is full
B Stores the bootloader
C Caches frequently accessed files
D Holds the kernel image
Discuss / Board
Q.373 In the von Neumann architecture, where are both data and instructions stored?
A In the same main memory
B In separate caches
C In the CPU registers only
D In ROM for data and RAM for instructions
Discuss / Board
Q.374 Which type of optical disc offers the highest storage capacity?
A Blu-ray Disc (BD)
B DVD
C CD
D HD DVD
Discuss / Board
Q.375 Which MS Word view shows the document as it will appear when printed?
A Print Layout view
B Web Layout view
C Outline view
D Draft view
Discuss / Board
Q.376 What is the shortcut to justify text in MS Word?
A Ctrl + J
B Ctrl + L
C Ctrl + R
D Ctrl + E
Discuss / Board
Q.377 In Excel, which function returns the largest value from a range?
A MAX
B LARGE
C MIN
D TOP
Discuss / Board
Q.378 What does the error #DIV/0! in Excel indicate?
A A formula is dividing by zero or an empty cell
B A cell reference is invalid
C A value is not available
D The formula contains unrecognized text
Discuss / Board
Q.379 Which type of malware monitors user activity and sends information to a third party?
A Spyware
B Ransomware
C Worm
D Virus
Discuss / Board
Q.380 Which email protocol allows messages to be managed directly on the server?
A IMAP
B POP3
C SMTP
D FTP
Discuss / Board
Q.381 What is the main function of a DNS server?
A Translates domain names into IP addresses
B Assigns IP addresses to devices
C Stores website databases
D Routes internet traffic
Discuss / Board
Q.382 Which search engine operator finds pages that contain one term but exclude another?
A Minus sign (-)
B Plus sign (+)
C OR
D AND
Discuss / Board
Q.383 In computer security, what is 'social engineering'?
A Manipulating people into divulging confidential information
B Hacking into social media accounts
C Using software to guess passwords
D Encrypting user data for ransom
Discuss / Board
Q.384 Which of the following is a valid IPv6 address format?
A 2001:0db8:85a3:0000:0000:8a2e:0370:7334
B 192.168.1.1
C 2001:db8::8a2e:370:7334:192.168.1.1
D Both A and C
Discuss / Board
Q.385 In Excel, what does the PMT function calculate?
A Periodic payment for a loan
B Present value of an investment
C Interest rate of a loan
D Number of periods for an investment
Discuss / Board
Q.386 Which of the following is an example of an input device that works on the principle of photo-electric sensing?
A Scanner
B Keyboard
C Mouse
D Trackball
Discuss / Board
Q.387 What is a key characteristic of proprietary software?
A Source code is not shared with the public
B It is always free of cost
C Users can freely modify the software
D It runs only on Linux
Discuss / Board
Q.388 Which MS Word feature allows you to insert pre-formatted text such as company address or disclaimer with a few clicks?
A Quick Parts
B Styles
C Templates
D Bookmarks
Discuss / Board
Q.389 In Excel, a cell displays #NAME? error. What is the most probable cause?
A The formula contains unrecognized text, like a misspelled function name
B The column is not wide enough
C A cell reference is invalid
D The formula divides by zero
Discuss / Board
Q.390 Which type of RAM must be refreshed periodically to retain data?
A DRAM
B SRAM
C ROM
D Cache
Discuss / Board

Master Computer set 1 for All Competitive Exams 2026

Practicing Computer set 1 MCQs is one of the most effective ways to prepare for competitive examinations in 2026. This topic-wise question bank contains carefully selected multiple-choice questions designed to strengthen conceptual understanding, improve accuracy, and enhance problem-solving speed. Our collection includes beginner, intermediate, and advanced-level questions frequently asked in JKSSB, SSC, Banking, Railway, Police, Defence, State PSC, and various national-level examinations. Every question is structured to reflect real exam patterns and helps candidates become familiar with objective-type assessment formats. Instant answer verification enables students to identify mistakes immediately and learn the correct approach without wasting valuable preparation time. Regular practice of topic-wise MCQs improves retention, reinforces key concepts, and develops confidence required to perform well under exam pressure. Whether you are revising important concepts, preparing for an upcoming recruitment test, or strengthening weak areas, these practice questions provide a reliable platform for continuous improvement. Consistent participation in MCQ-based learning sessions can significantly increase your chances of achieving higher scores and better ranks in competitive examinations.

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