Q250. What is the act of creating an extra copy of stored data for recovery?
[IBPS RRB PO Mains 2025]
- Formatting
- Backup
- Restoration
- Renaming
- Encryption
Answer: B. Backup
Explanation: Backup means preserving an additional copy of information so it can be recovered after loss, corruption or failure. Restoration is the subsequent process of retrieving data from that previously created backup.
Q249. What command interpreter offers an interface to the UNIX kernel?
[IBPS RRB PO Mains 2025]
- Compiler
- Shell
- Device driver
- Spreadsheet
- Boot sector
Answer: B. Shell
Explanation: A UNIX shell accepts user commands and launches programs through operating-system facilities. Bash and zsh are familiar examples; a terminal window provides a place to interact with the shell but is not itself the interpreter.
Q248. Which technology can support very short-range personal area network communication?
[IBPS RRB PO Mains 2025]
- Long-distance twisted-pair trunk
- Cable TV backbone
- Infrared
- Geostationary satellite
- Submarine optical fibre
Answer: C. Infrared
Explanation: Infrared has been used for short-distance communication between nearby personal devices. Other common personal area networking technologies include Bluetooth, which was not among the original answer alternatives in this remembered question.
Q247. Which keyboard key displays Office ribbon access hints in Excel?
[IBPS RRB PO Mains 2025]
- Ctrl
- Shift
- Alt
- Tab
- Esc
Answer: C. Alt
Explanation: Pressing Alt in Excel activates the ribbon access-key hints, after which letter keys can be used for command selection. The corresponding menu-navigation convention also existed in older Office interfaces.
Q246. Which item is not an ordinary component of a URL?
[IBPS RRB PO Mains 2025]
- Protocol scheme
- Domain
- Path
- Query
- Bandwidth
Answer: E. Bandwidth
Explanation: A URL normally contains components such as its scheme, host, path and optional query. Bandwidth describes network transmission capacity, not part of a web address’s grammatical structure.
Q245. How are IPv6 addresses conventionally represented?
[IBPS RRB PO Mains 2025]
- Binary words
- Dotted decimal numbers
- Hexadecimal groups
- Octal numbers
- ASCII codes
Answer: C. Hexadecimal groups
Explanation: IPv6 uses 128-bit addresses commonly written as colon-separated groups of hexadecimal digits. IPv4 instead normally appears in dotted decimal notation, and IPv6 permits shortening repeated groups of zeros.
Q244. Which statement best describes a dynamic website?
[IBPS RRB PO Mains 2025]
- It always shows identical fixed content
- It contains only fixed HTML pages
- It may update content based on user activity or changing data
- It cannot be edited after launch
- It cannot use a database
Answer: C. It may update content based on user activity or changing data
Explanation: A dynamic website can generate or alter pages using application logic, stored data and user actions. Personalized recommendations and a live shopping cart are examples of content that may differ between users.
Q243. Which malware class can independently spread between vulnerable computers?
[IBPS RRB PO Mains 2025]
- Ordinary document virus
- Worm
- Trojan horse
- Spyware only
- Adware only
Answer: B. Worm
Explanation: A worm is self-replicating malware that can propagate across networks without attaching to a normal host program. Viruses traditionally infect other files or programs, while trojans are malicious software disguised as legitimate tools.
Q242. Which satellite navigation technology calculates position from radio signals?
[IBPS RRB PO Mains 2025]
- Bluetooth
- GPS
- Wi-Fi
- Radar
- Infrared
Answer: B. GPS
Explanation: GPS receivers determine location by using timed radio signals from multiple navigation satellites. The receiver estimates its distance from each satellite and solves for location and clock differences using those measurements.
Q241. What does Strikethrough formatting do to text in Microsoft Word?
[IBPS RRB PO Mains 2025]
- Underlines the text
- Draws a line over it
- Draws a line through its centre
- Changes font colour
- Converts it to capitals
Answer: C. Draws a line through its centre
Explanation: Strikethrough draws a line through selected characters, often indicating obsolete information or a completed task. It keeps the characters in the document rather than deleting or replacing them.
