Question Bank — Computers (all papers)
💻 Question Bank — Computers
Every Computer/IT question from the JKSSB 2026 papers that had a computer section, grouped by topic. Columns: Source · Question · Options · Answer · Explanation.
Sources (4 papers, 70 Qs): Website Operator Q61–80 · Inspector-FPF Q111–120 · Junior Assistant Q61–80 · Laboratory Attendant Q101–120. Codes: WO · IN · JA · LA. ⬆ Home · 🗺️ _MOC-Computers · 🎯 FAA prediction
Self-test
Read the Question + Options; cover the Ans / Explanation columns and reveal to check.
1. Fundamentals of Computer Science
| Source | Question | Options | Ans | Explanation |
|---|---|---|---|---|
| WO · Q65 | CPU component that controls the sequence of operations and manages data flow? | A) Register B) Cache C) ALU D) Control Unit | C ⚠️ | Described function = Control Unit (D); ALU only does arithmetic/logic → likely key error |
| WO · Q71 | Which generation introduced integrated circuits (ICs)? | A) First B) Second C) Third D) Fourth | C | 1st vacuum tubes, 2nd transistors, 3rd ICs, 4th microprocessors |
| WO · Q72 | The smallest unit of data is called: | A) Block B) Bit C) Byte D) Word | B | A bit (0/1) is smallest; 8 bits = 1 byte |
| WO · Q73 | Binary equivalent of decimal 10: | A) 1010 B) 0101 C) 1111 D) 1001 | A | 10 = 8 + 2 = 1010₂ |
| JA · Q61 | Fundamental operation for arithmetic in the ALU? | A) Transistors storing decimal directly B) Processing binary data through logic gates C) Floating-point in software only D) Running high-level instructions | B | ALU works on binary data via logic gates |
| JA · Q62 | Correct about von Neumann execution/memory/addressing? | A) Immediate addressing always speeds execution B) Larger cache always improves performance C) Data hazards can occur in pipelined CPUs even with only register addressing D) Virtual memory removes need for cache | C | Data hazards arise from instruction dependencies, not addressing mode |
| JA · Q63 | Correct about memory/storage fundamentals? | A) RAM is non-volatile B) ROM allows read+write in normal use C) Cache is faster than main memory, stores frequently accessed data D) CPU directly accesses secondary storage | C | Cache = small, fast, frequently-used data (RAM volatile, ROM read-only) |
| JA · Q64 | Correct about CPU operation/instruction execution? | A) Program Counter stores current instruction's address B) Interrupt processed only after whole program ends C) Instruction Register stores current instruction being decoded/executed D) All instructions take same clock cycles | C | IR holds current instruction; PC holds address of the next |
| JA · Q65 | Which are correct? I) overflow from only MSB carry-out; II) unsigned→larger uses zero-extension; III) BCD = 4 bits/digit; IV) byte-addressable effective address depends on instruction length | A) Only IV B) Only II and III C) Only II and IV D) Only III and IV | B | Zero-extension preserves unsigned value; BCD = 4 bits/digit; I & IV false |
| LA · Q101 | Boots & compiles, but program won't run and no error shows. Most likely cause? | A) Faulty keyboard/mouse B) Insufficient RAM C) Disconnected network cable D) Corrupted printer driver | B | Lack of memory can stop execution without a compile error |
| LA · Q110 | Match Cache/Register/Interpreter/Compiler with: a) translates whole program b) named locations in processor c) executes line-by-line, no object code d) small CPU store for immediate ops | A) i-d,ii-b,iii-a,iv-c B) i-b,ii-c,iii-d,iv-a C) i-c,ii-d,iii-a,iv-b D) i-b,ii-d,iii-c,iv-a | D | Interpreter = line-by-line (c); Compiler = whole program (a) — decisive pairings |
| IN · Q111 | 8-bit 2's-complement — which causes overflow? | A) 01010101 + 00110011 B) 10011001 + 10101010 C) 01111111 + 00000001 D) 11110000 + 00010000 | C | 127 + 1 flips the sign bit (→ −128) → overflow |
2. Operating System
| Source | Question | Options | Ans | Explanation |
|---|---|---|---|---|
| WO · Q61 | Operating System: | A) Links a program with subordinate interferences B) Enables drawing a flowchart C) Provides a layer, user-friendly interface D) All of these | C | OS is the user↔hardware interface providing a friendly environment |
| WO · Q62 | While a computer is on, its OS software stays in: | A) External storage B) Disk drive C) Floppy/Pen Drive D) Primary storage | D | Running kernel/OS resides in RAM (primary storage) |
| WO · Q63 | To run more than one program at a time, the system software must support: | A) Virtual memory B) Coupling C) Multitasking D) Word processing | C | Multitasking runs multiple tasks concurrently |
| WO · Q64 | Which is an open-source mobile OS? | A) iOS B) Windows Phone C) Android D) BlackBerry OS | C | Android (AOSP) is open-source; others proprietary |
| JA · Q70 | Valid method to recover from a deadlock? | A) Decrease CPU priority of all B) Preempt resources from one process, give to another C) Increase priority of all deadlocked D) Increase priority of one deadlocked | B | Resource preemption is a standard deadlock-recovery method |
| JA · Q71 | Priority scheduling w/ inheritance — correct? I) inversion when low-priority holds needed resource; II) low process temporarily inherits higher priority; III) round-robin fully avoids inversion; IV) starvation may still occur | A) I and II B) II and III C) II and IV D) I, II and IV | D | Round-robin does not fully avoid inversion (III wrong) |
| LA · Q113 | Which is NOT true about virtual memory? | A) Lets programs use more than physical RAM B) Uses disk to extend apparent main memory C) Permanently stores running processes in secondary storage D) Loads only required parts into RAM | C | Virtual memory swaps temporarily, not permanently |
| LA · Q114 | Which OS component maps filenames to physical storage locations? | A) File system directory structure B) Memory allocation dispatcher C) Data locality controller D) Storage routing interface | A | The file-system directory structure maintains this mapping |
| LA · Q115 | OS best for network testing, scripting, open-source, strong CLI? | A) Windows B) Linux C) MacOS D) Standalone firmware OS | B | Linux — CLI, scripting, open-source flexibility |
3. Hardware & Software
| Source | Question | Options | Ans | Explanation |
|---|---|---|---|---|
| WO · Q66 | Licence that lets users see/change/share source code? | A) Open-source B) Proprietary C) Freeware D) Shareware | A | Open-source grants view/modify/redistribute rights |
| WO · Q68 | Firmware that initializes hardware and loads the OS? | A) Device driver B) Compiler C) BIOS D) Kernel | C | BIOS does POST, hardware init, hands off to bootloader/OS |
| JA · Q66 | Which correctly classifies hardware & system software? | A) Device Driver–HW; Keyboard–SW B) Compiler–HW; RAM–SW C) CPU–HW; OS–SW D) Adobe Scan–HW; Monitor–SW | C | Only C classifies both items correctly |
| JA · Q67 | Quad-core, 16 GB RAM, SSD; heavily-threaded, disk-heavy program runs slow & sometimes crashes. Cause? | A) Inefficient multithreading & high memory usage B) Insufficient CPU cores C) Large SSD → slow access D) Slow processor frequency | A | Many threads + frequent disk I/O on 16 GB → memory pressure |
| LA · Q103 | Correct about hardware ↔ system-software interaction? | A) System SW is hardware-independent B) Firmware is application software C) The OS is an intermediary, managing resources & hardware abstraction D) App install can modify CPU microarchitecture | C | OS mediates between hardware and applications |
| LA · Q105 | Powers on but no display/sound; monitor/cables OK; swapping OS drive doesn't fix. Cause? | A) OS corrupted B) Graphics driver outdated C) A hardware failure in a core internal component D) Unsupported monitor resolution | C | Points to RAM/motherboard/GPU, not the OS |
| LA · Q112 | New GPU detected physically, but apps can't use advanced features until a component lets OS/apps talk to it. Install? | A) Hardware synchronization module B) Digital performance translator C) System interface accelerator D) Device driver | D | A device driver lets the OS/apps communicate with the hardware |
| IN · Q113 | Match Firmware/Utility/Driver/Compiler with: a) HLL→machine code b) controls OS↔hardware c) ROM, initializes hardware d) disk cleanup | A) i-c,ii-d,iii-b,iv-a B) i-b,ii-a,iii-c,iv-d C) i-d,ii-b,iii-a,iv-c D) i-a,ii-c,iii-d,iv-b | A | Firmware=ROM/init (c), Utility=cleanup (d), Driver=OS↔HW (b), Compiler=HLL→machine (a) |
4. Input & Output Devices
| Source | Question | Options | Ans | Explanation |
|---|---|---|---|---|
| WO · Q69 | Best output device for large engineering drawings? | A) Laser printer B) Plotter C) Inkjet printer D) Dot matrix | B | Plotters make large, precise vector drawings (CAD/maps) |
| WO · Q70 | Input device reading characters in special magnetic ink? | A) OCR B) OMR C) MICR D) Bar code reader | C | MICR reads magnetic-ink codes on bank cheques |
| JA · Q68 | Categorize I/O: i) Light Pen ii) Punch Card Reader iii) Plotter iv) Sound Card v) Digitizer Tablet vi) Drum Printer vii) Scanner | A) In: i,ii,v,vii; Out: iii,iv,v,vi B) In: i,ii,v; Out: i,iii,iv,vi C) In: ii,vi,vii; Out: i,iii,iv,vi D) In: i,ii,v,vii; Out: iii,iv,vi | D | Input: light pen, punch-card reader, digitizer, scanner; Output: plotter, sound card, drum printer |
| JA · Q69 | Match: 1) Haptic Gloves 2) Tactile Display 3) VRU 4) Data Glove → i) tactile sensations & senses interaction ii) captures hand/finger input iii) gestures + force feedback iv) synthesised audio output | A) 1-ii,2-i,3-iv,4-iii B) 1-ii,2-iv,3-i,4-iii C) 1-iii,2-iv,3-i,4-ii D) 1-iii,2-i,3-iv,4-ii | D | Haptic=gesture+force (iii); Tactile=tactile sensations (i); VRU=audio (iv); Data Glove=hand input (ii) |
| LA · Q102 | Which describes a tactile (refreshable braille) display? | A) Electro-mechanical, round-tipped pins raise Braille through holes B) Monitor using haptic vibrations for text texture C) Converts screen text into high-speed audio D) Braille engraved permanently in a metal plate | A | Pins rise/fall to form refreshable Braille characters |
| LA · Q104 | Most accurate about I/O devices? | A) Capacitive touchscreen is strictly output B) OCR scanners are purely input devices C) Digitizer tablet with stylus is both input & output D) Braille displays are output via haptic vibrations | B | OCR scanners convert physical text to digital form (input only) |
| LA · Q111 | Device to draw naturally & precisely (vs a mouse)? | A) Graphics tablet B) Digital stroke enhancer C) Precision art interface pad D) Visual rendering controller | A | A graphics tablet + stylus enables natural, precise drawing |
5. Storage Devices
| Source | Question | Options | Ans | Explanation |
|---|---|---|---|---|
| WO · Q67 | Highest data transfer rate among storage devices? | A) Magnetic Tape B) Hard Disk Drive C) Solid State Drive D) Optical Disk | C | SSD (flash, no moving parts) → fastest transfer |
6. MS Office (Word / Excel / Access / PowerPoint)
| Source | Question | Options | Ans | Explanation |
|---|---|---|---|---|
| WO · Q77 | Word feature to combine letters with an address database? | A) Track Changes B) Header & Footer C) AutoCorrect D) Mail Merge | D | Mail Merge merges a template with a data source |
| WO · Q78 | Symbol used to start a formula in Excel? | A) % B) = C) + D) # | B | Every Excel formula begins with = |
| WO · Q79 | Query type that retrieves data based on a condition? | A) Update B) Append C) Select D) Delete | C | A Select query retrieves/filters records |
| WO · Q80 | Key to start a slideshow from the beginning? | A) F1 B) F5 C) F7 D) F9 | B | F5 starts from slide 1 (Shift+F5 = current slide) |
| JA · Q72 | Which is NOT correct about MS Word? | A) A content control can restrict editing but cannot enforce data validation B) Different first-line/hanging indents per paragraph in same style C) Navigation Pane can't directly display comments D) Accepting a Track Change removes the author's metadata | A | This statement is the incorrect one (content controls can impose validation) |
| JA · Q73 | Which is true about MS Word? | A) Section Breaks allow different headers/footers in one document B) Page Break allows different headers/footers C) Headers/footers can't be changed once set D) Headers/footers auto-delete on closing | A | Section breaks (not page breaks) enable independent headers/footers |
| JA · Q74 | =IF(B2>=1000,"High",IF(B2>=500,"Medium","Low")) — correct? | A) Always errors B) Errors if B2 blank C) Errors for non-numeric B2 D) Works correctly for all numeric B2 | D | The nested IF classifies any numeric value correctly |
| JA · Q75 | Count students with Math ≥80 (B) AND Science ≥90 (C): | A) =COUNTIFS(B2:B10,">=80",C2:C10,">=90") B) =SUMPRODUCT((B2:B10>=80),(C2:C10>=90)) C) =SUM(IF((B2:B10>=80),(C2:C10>=90),1,0)) D) None of these | A | COUNTIFS applies both range/criteria pairs |
| JA · Q77 | PowerPoint content that cannot be directly converted to SmartArt? | A) A bulleted list B) A table of data C) A block of descriptive text D) An indented text | B | Text converts to SmartArt; a table does not |
| LA · Q106 | An Access VBA "On Click" script (UPDATE-style code): | A) Filters students below 40 B) Automatically updates every record in the table C) Deletes all below 40 D) Creates a new Pass/Fail table | B | Per the shown UPDATE code, it updates every record |
| LA · Q107 | Pages 1–3 in Roman (i, ii, iii), rest 1, 2, 3… in one Word doc. Do what? | A) Mixed Numbering from Insert B) Add a section break, format page numbers separately C) Pagination Wizard from Layout D) Change numbering from Font settings | B | A section break lets each section number independently |
| LA · Q117 | Logo auto-appearing in the same spot on all current & future slides? | A) Global Slide Replication B) Layout Replicator C) Theme Designer D) Slide Master | D | Slide Master applies elements to all slides |
| LA · Q118 | =IF((SUM(A1:A5)>100,(AVERAGE(A1:A5),"Low"))) — will it work? | A) Yes, for all values B) Yes, integers only C) No — syntax issue D) No — incorrect logic | C | Mismatched/extra parentheses break the formula |
| LA · Q119 | Feature applying uniform layout/fonts/design across all pages/slides? | A) Global formatting synchronizer B) Master template system C) Layout replication engine D) Universal style broadcaster | B | A master template enforces one design everywhere |
| LA · Q120 | Feature to store/organise structured data in rows & columns for analysis? | A) Matrix virtualization framework B) Database management C) Grid processing interface D) Structured data renderer | B | Database management stores/organises structured data |
7. E-mail & Internet
| Source | Question | Options | Ans | Explanation |
|---|---|---|---|---|
| WO · Q74 | Full form of ISP? | A) Internal Service Protocol B) Internet Secure Protocol C) Integrated Service Provider D) Internet Service Provider | D | ISP = Internet Service Provider |
| WO · Q75 | In an email address, "@" separates: | A) Protocol & domain name B) Domain & host name C) Folder & username D) Username & domain name | D | Format is username@domain |
| WO · Q76 | Protocol ensuring secure email transmission? | A) FTP B) HTTP C) SSL/TLS D) TCP | C | SSL/TLS encrypts the connection |
| JA · Q76 | Correct about email functionality? | A) Filters can't auto-forward without user action B) Digital signatures encrypt the body C) POP3 downloads emails from server to local computer D) BCC hides sender & recipients from each other | C | POP3 downloads mail to the local device |
| JA · Q78 | TCP/IP & Internet communication — correct? | A) TCP guarantees delivery & order but not timing B) TCP faster than UDP (no error checking) C) IPv6 uses 256-bit addresses, 40-byte header D) ICMP mainly for app-layer data transfer | A | TCP = reliable, ordered delivery; no timing guarantee |
| JA · Q79 | Correct about Internet routing/protocols? | A) BGP routes within one local network B) ICMP encrypts packets C) IPv6 removes the need for NAT (huge address space) D) HTTP/3 relies on TCP | C | IPv6's vast address space removes the address-scarcity reason for NAT |
| JA · Q80 | In cloud IaaS, what does the provider manage? | A) Networking hardware B) Operating system C) Hardware platform & OS D) OS & data | A | Provider manages the physical/networking hardware; customer manages OS/apps/data |
| LA · Q108 | LAN via Ethernet but no ISP/Internet — can she send Gmail? | A) Yes — Gmail caches on LAN, syncs later B) No — Gmail needs Wi-Fi C) Yes — Ethernet supports internal cloud routing D) No — Gmail needs Internet to reach its servers | D | Gmail must contact remote servers over the Internet |
| LA · Q109 | Large attachment auto-uploaded and shared as a link. Which feature? | A) Cloud storage integration B) SMTP compression C) Dynamic attachment routing D) Internet caching protocol | A | Cloud storage integration uploads the file and shares a link |
| LA · Q116 | How does a browser load a webpage from a URL? | A) Downloads directly from the ISP B) SMTP resolves the name & transfers it C) DNS finds the IP, HTTP/HTTPS loads the page D) The search engine fetches & renders it | C | DNS resolves name→IP; HTTP/HTTPS fetches the page |
8. IT Applications, e-Governance, Files & Security
| Source | Question | Options | Ans | Explanation |
|---|---|---|---|---|
| IN · Q112 | Which about IT applications is true? | A) E-governance eliminates physical offices B) E-commerce only for physical goods C) Telemedicine lets doctors consult via communication networks D) Online education needs physical presence | C | Telemedicine uses networks for remote consultation |
| IN · Q114 | 8 GB RAM; browser (25 tabs)+video editor+music+code editor; slows (no crash), disk light blinks though no files saved/opened. Explanation? | A) OS stopped multitasking B) CPU cache full C) OS using virtual memory, swapping RAM↔disk D) BIOS reallocating hardware | C | Continuous disk activity with no file I/O = paging/swapping |
| IN · Q115 | E-service system (online apply → auto-verify → SMS/email → digital approval → central data). Real IT contribution? | A) Only replaces paper with digital files B) Eliminates all human decisions C) Integrates communication, data processing, storage & automation D) Mainly provides internet access | C | The system combines all these IT functions |
| IN · Q116 | PDF→JPG output is blurred, larger, and text can't be copied. Reason? | A) Converted into raster images B) Website reduced internet speed C) Browser changed the extension D) File uncompressed via ZIP | A | Raster conversion turns vector text into pixels (uncopyable, can blur) |
| IN · Q117 | True about KMZ files & geo-tagged photos? | A) KMZ stores only images with location names B) Geo-tagging embeds latitude & longitude in image metadata C) KMZ can't contain coordinates D) Uploading a geo-tagged photo auto-creates a KMZ | B | Geo-tags store coordinates in the photo's EXIF metadata |
| IN · Q118 | Correct about viruses & antivirus? | A) A virus runs automatically without user action once in memory B) Signature-based antivirus detects only known malware patterns C) Online registration guarantees zero-day protection D) Firewall and antivirus are identical | B | Signature detection matches known malware; can miss zero-days |
| IN · Q119 | Which is incorrect about field apps in a Forest Department? | A) Mobile apps photograph trees B) GIS apps integrate GPS + satellite imagery C) Forest apps fully replace physical field inspections D) Field apps work without network/sync | C | Apps assist but do not fully replace field inspections |
| IN · Q120 | e-Office: ensure only the intended officer can read a file in transit? | A) Digital signature via PKI B) Encrypt using the recipient's public key C) Add a watermark D) Scan before sending | B | Public-key encryption → only the recipient's private key can decrypt |
📊 Topic distribution
| Topic | Count |
|---|---|
| Fundamentals of Computer Science | 12 |
| Operating System | 9 |
| Hardware & Software | 8 |
| Input & Output Devices | 7 |
| Storage Devices | 1 |
| MS Office (Word/Excel/Access/PPT) | 15 |
| E-mail & Internet | 10 |
| IT Applications / e-Gov / Files / Security | 8 |
| Total | 70 |
For FAA
MS Office (15) and Fundamentals (12) dominate — highest-yield. [WO·Q65] is flagged (ALU vs Control Unit). Inspector & Lab-Attendant items are scenario-based — read the situation, don't just recall a definition.
