Defence Electronics and Communication Systems is part of Defence Technology. Below are notes on 24 sub-topics, followed by practice MCQs from State PSC and UPSC papers.

Battlefield Surveillance and Target Acquisition Systems

  • The Counter Insurgency and Jungle Warfare School (CIJWS) of the Indian Army is located at Vairengte.
  • When recovering firearms from Naxals, assessing distance, observing firearms, and assessing their strength are crucial; opening fire immediately upon sighting is incorrect.
  • For securing an outpost in a deep jungle area, essentials include binoculars and night vision devices, constructing firing trenches and weapon pits, and having a single, zig-zag entry/exit point. Bright lights inside the camp at night should be avoided.
  • While patrolling in an extremist-affected area, one should avoid using 'Kacha' established roads; prefer cross-country movement. Maintaining proper distance and awareness of one's position in formation are important.
  • A Door Frame Metal Detector (DFMD) consists of an Electronic Unit, Remote Control Unit, and Cross Piece. A Lead Curtain is not part of a DFMD.
  • The minimum distance between two items going through an X-ray Baggage Inspection System (X-BIS) should be 60 cm.
  • Jaguar, Dornier-228, MIG-27M, Mirage 2000, MiG-21, Sukhoi Su-30, and MiG-29 are types of aircraft, primarily used by the Indian Air Force (IAF).
  • An IAF MiG-21 aircraft crashed near Bikaner following a bird hit (e.g., incident in May 2019).
  • An IAF MiG-21 aircraft crashed in Gwalior on 25th September 2019.
  • The Western Air Command (WAC) of the Indian Air Force has its headquarters in New Delhi, often hosting its Commander's Conferences there.
  • A highly sophisticated Multi-Zone DFMD is capable of detecting metallic items, nonmetallic items, and all explosives, including plastic and liquid explosives.
  • X-BIS stands for X-ray Baggage Inspection System.
  • As far as airport security is concerned, the Visitors car parking area does not fall under the 'Airside'; Tarmac, Terminal building, and Runway do.
  • Regarding CCTV monitors, screens should be placed in sequence providing logical continuity and tilted upward to avoid reflections. Stacking monitors should be avoided. Placing monitors in a curved configuration is not correct.
  • Essential elements for counter-surveillance in VIP security include varying speed (speeding up, slowing down), making abrupt stops (e.g., walking into a building), and dropping something to observe reactions.
  • Principles for a 'Road Block' in terroristaffected areas include making it difficult for terrorists to turn back and manning the road block as per traffic movement. Adequate troops should not be kept in the open, and communication should be secure, not audible to all nearby personnel.
  • When a VIP is staying in a hotel, it is essential to check for available emergency exits and ensure incoming calls are screened. Valuables are typically secured, not deposited with bodyguards.
  • The first three 'Phalcon AWACS' supplied by Israel were received in India in May 2009.
  • The code name of the Air Force exercise held at Pokaran in March 2016 was 'Operation Iron Fist'.
  • Mochhang is identified as a war instrument.

Command,

Control,

Communications,

Computers, Intelligence, Surveillance, and

Reconnaissance (C4ISR) Systems

  • DEFCOM is jointly organised by the Corps of Signals and the Confederation of Indian Industry (CII).
  • The Indo-Tibetan Border Police (ITBP) was established on 24th October 1962.

Electro-Optical and Infrared (EO/IR) Sensors for Defence

  • VULCAN 20-20: World's most powerful laser under development by the United Kingdom.

Integrated

Avionics

and

Platform

Management Systems

1.

Tejas (Light Combat Aircraft - LCA)

Multirole, indigenous, 4.5 generation fighter aircraft. 2.

Saras

India's first indigenous multipurpose civilian aircraft, developed by NAL. 3.

Lakshya

Indigenous pilotless target aircraft, developed by ADE, DRDO. 4.

Ilyushin Il-78 (Il-78MKI)

Primary air-to-air refueller aircraft of the Indian Air Force (Russian origin). 5.

Sukhoi-30MKI

    • Twin-cockpit, multi-role, all-weather fighter aircraft.
    • Equipped with air-to-air refuelling capability.
    • Manufactured in India by Hindustan Aeronautics Limited (HAL) under license (e.g., Nashik/Ozar).
    • Significant operational bases include Tezpur, Chabua, Jorhat, Pune. 6.

Rafale Fighter Jet

    • Manufactured in France by Dassault Aviation.
    • 4.5 generation multi-role fighter.
    • India received the first batch of five jets in July 2020 at Ambala Air Force Station.
    • Inducted into Indian Air Force Squadron 17, "Golden Arrows." 7.

Light Combat Helicopter (LCH)

Production in India commenced in Bengaluru (HAL facility). 8.

4th Generation

MiG-29.

4.5 Generation

Rafale, Tejas MK-1.

5th Generation

Examples include F-22, F-35, Su-57, J-20 (Neither Rafale, MiG-29, nor Tejas MK-1 are 5th generation). 9.

Helicopter

Origins

(Primary

Manufacturer Country)

Kamov Ka-226T

Russia (Kamov).

Airbus Helicopters AS565 Panther

France/Germany (Eurocopter/Airbus Helicopters).

Aérospatiale SA 321 Super Frelon

France (Sud Aviation/Aérospatiale).

Sikorsky SH-3 Sea King / Westland Sea King

USA/UK (Sikorsky/Westland). 10.

C-17 Globemaster III

Heavy-lift transport aircraft (USA).

C-130J Super Hercules

Medium-lift tactical transport aircraft (USA).

Ilyushin Il-76

Heavy-lift strategic airlifter (Russia).

Network-Centric

Warfare

(NCW)

Architectures and Implementation

  • Defcom India 2019's main theme: "Communication as a decisive catalyst for jointness."
  • 'Exercise Poorvi Akash' is conducted by the Eastern Air Command.

Satellite Communication (SATCOM) for Defence Applications

  • DRDO Motto: Balasya Mulam Vigyanam (Strength's Origin is in Science).
  • National Cadet Corps (NCC) established: 1948.
  • Sainik Schools: Established as a joint venture of Central and State Governments.
  • Defence Terminology:
    • Arsenal: Place where arms and ammunition are manufactured and stored.
    • Battery: A unit comprising a number of artillery guns, mobile or fixed.
    • Conscription: Compulsory recruitment of personnel for service in the armed forces.
    • Dogfight: An aerial duel between two or more aircrafts at a close range.

10. Defence Satellites and Reconnaissance Systems

Practice MCQs: Defence Electronics and Communication Systems

Battlefield Surveillance and Target Acquisition Systems

  1. The Counter Insurgency and Jungle Warfare School of the Indian Army is located at

    Asked in: UPSC CISF AC EXE 2018 · Local Self Govt. Dept. (RO and EO) Re Exam 2022

    1. Wellington
    2. Dehradun
    3. Vairengte
    4. Gulmarg
    Show answer

    Answer: C. Vairengte

    - The CIJW School is a premier training institution of the Indian Army specializing in counter-insurgency and jungle warfare tactics. - It was established in 1967. - Its location in the dense jungle environment of Mizoram provides a realistic setting C. Chandigarh D. New Delhi Ans: C This question is about a significant event involving a command of the Indian Air Force and its venue. Knowledge of such defense-related conferences and their locations is important.

  2. An aircraft of Indian Air Force crashed in Gwalior on 25th September 2019. The aircraft was the

    Asked in: Food Safety Officer 2019

    1. Mirage – 2000
    2. Sukhoi Su – 30
    3. MiG – 21
    4. MiG – 29
    Show answer

    Answer: B. Sukhoi Su – 30

    A Sukhoi Su-30 aircraft of the Indian Air Force crashed in Gwalior on September 25, 2019. for training troops in fighting unconventional warfare in challenging terrain.

  3. It is difficult to recover firearms from Naxals. If you are going to do so, some points should be remembered. Which one of the following is not correct?

    Asked in: UPSC CISF AC EXE 2019

    1. Assess the distance between the Naxals and yourself
    2. Observe the firearms they are carrying
    3. Assess the strength of the Naxals
    4. Open fire as soon as you see them
    Show answer

    Answer: D. Open fire as soon as you see them

    Standard tactical procedure involves assessing the situation (distance, strength, weapons) before initiating contact or opening fire. Immediate, unassessed opening of fire is generally reckless and may jeopardize the mission (like recovering firearms) or the safety of the personnel.

  4. To secure an outpost in a deep jungle area, several points have to be kept in mind. Which one of the following is not one of them?

    Asked in: UPSC CISF AC EXE 2019

    1. Binocular and night vision devices should be available in the sentry post
    2. Construct firing trench and weapon pits
    3. There should be only one entry and exit point and it should be in zig-zag pattern
    4. During night, there should be bright lights inside the camp
    Show answer

    Answer: D. During night, there should be bright lights inside the camp

    Bright lights inside a camp at night would silhouette the personnel and make them easy targets for snipers or attackers observing from outside. Security lighting should typically be directed outwards or used strategically to illuminate approaches, not the interior space in a way that exposes occupants.

  5. Which one of the following should be avoided by the patrolling party while patrolling in an extremist affected area?

    Asked in: UPSC CISF AC EXE 2019

    1. Use the 'Kacha' established road instead of making cross-country
    2. Watch out for any mine or look on the road as it may be linked to IED
    3. Maintain a proper distance between front and rear of the patrolling party
    4. While walking in formation, keep your own position in mind
    Show answer

    Answer: A. Use the 'Kacha' established road instead of making cross-country

    Established routes, especially unpaved (Kacha) roads, are predictable lines of movement and thus pose a higher risk of ambush or IEDs in extremist- affected areas.

  6. Which one of the following is not part of DFMD ?

    Asked in: UPSC CISF AC EXE 2020

    1. Electronic Unit
    2. Lead Curtain
    3. Remote Control Unit
    4. Cross Piece
    Show answer

    Answer: B. Lead Curtain

    - DFMDs use electromagnetic fields to detect metallic objects as a person walks through the frame. Key components include the electronic unit (generating fields, processing signals), the frame structure (cross piece, side panels), and sometimes a remote control or interface. - Lead curtains are used for shielding against X-rays, commonly found in X- ray baggage scanners to protect operators and the environment from radiation. They are not part of the metal detection principle.

  7. Which one of the following should be the minimum distance between two items going through the X-BIS ?

    Asked in: UPSC CISF AC EXE 2020

    1. 20 cm
    2. 30 cm
    3. 60 cm
    4. 40 cm
    Show answer

    Answer: B. 30 cm

    Maintaining a minimum gap between items is essential for the X-ray machine to produce clear, distinct images of each item. If items are too close or overlapping, their images can merge, making it difficult or impossible for the screener to accurately analyze the contents and detect potential threats.

  8. A highly sophisticated Multi-Zone DFMD is capable of detecting

    Asked in: UPSC CISF AC EXE 2020

    1. metallic items above a set threshold level.
    2. metallic as well as non-metallic items.
    3. metallic items, non-metallic items, as well as conventional explosives.
    4. metallic items, non-metallic items, as well as all explosives including plastic and liquid explos‐ ives.
    Show answer

    Answer: A. metallic items above a set threshold level.

    DFMDs are designed specifically for the detection of metals.

  9. Which one of the following is the full form of X-BIS ?

    Asked in: UPSC CISF AC EXE 2022

    1. X-ray Baggage Inspection System
    2. X-ray Baggage Imaging System
    3. X-ray Based Imaging System
    4. X-ray Baggage Identifying System
    Show answer

    Answer: A. X-ray Baggage Inspection System

    X-BIS refers to the technology used for scanning luggage and bags using X-rays, commonly employed at airports, railway stations, and other security checkpoints for detecting prohibited items.

  10. Which one of the following areas of the Airport does not fall under Airside as far as security of Airport is concerned ?

    Asked in: UPSC CISF AC EXE 2022

    1. Tarmac
    2. Visitors car parking area
    3. Terminal building
    4. Runway
    Show answer

    Answer: B. Visitors car parking area

    Airside areas of an airport are the parts where aircraft operate or are serviced, including runways, taxiways, aprons (tarmac), and secure areas within the terminal building (beyond security checks). Access to these areas is strictly controlled. Landside areas are those accessible to the general public before security checks, such as access roads, public parts of the terminal building (check-in areas), and parking facilities. The visitors car parking area is located landside.

  11. With regard to CCTV monitor, which one of the following statements is *not* correct ?

    Asked in: UPSC CISF AC EXE 2023

    1. Monitor should be placed in a curved config‐ uration
    2. The monitor screen should be tilted upward to avoid reflection of overhead lighting
    3. If possible, stacking of monitors should be avoided
    4. Screens should be placed in a sequence, providing logical continuity with relation to location of cameras
    Show answer

    Answer: B. The monitor screen should be tilted upward to avoid reflection of overhead lighting

    The statement that is not correct regarding CCTV monitor placement is tilting the screen upward to avoid reflection of overhead lighting. Tilting a screen upward would typically increase the angle at which light from overhead sources reflects into the operator's eyes, worsening glare and reducing visibility. To avoid reflections from overhead lights, monitors should ideally be tilted slightly downwards or positioned to avoid direct light sources.

  12. In VIP security, counter surveillance is very important. Which of the following is/are essential for counter surveillance? 1. Try speeding up, and then slow down 2. Walk into a building and stop abruptly 3. Drop something to see if someone picks it up Select the correct answer using the code given below :

    Asked in: UPSC CISF AC EXE 2023

    1. 1 only
    2. 1, 2 and 3
    3. 2 and 3 only
    4. 1 and 3 only
    Show answer

    Answer: B. 1, 2 and 3

    Counter-surveillance techniques aim to detect if someone is following or observing a VIP. All three listed actions are considered valid methods to potentially reveal surveillance. 1. Changing speed (speeding up and slowing down) forces a potential surveillant to adjust their pace, making their following behavior more obvious. 2. Entering a building and stopping abruptly allows the VIP (or security personnel) to observe who enters after them or reacts outside. 3. Dropping something can be a deliberate act to create a pause or cause a reaction from someone following closely, potentially revealing their presence or behavior.

  13. 'Road Block' is done in terrorist affected areas. Which of the following principles should be followed in it ? 1. It should make it difficult for the terrorists to turn back 2. Adequate troops should be kept in the open 3. Manning of road block should be done as per traffic movement 4. Proper communication be set up, audible to all nearby personnel Select the correct answer using the code given below :

    Asked in: UPSC CISF AC EXE 2023

    1. 1 only
    2. 2 and 4 only
    3. 1, 2 and 3
    4. 1 and 3 only
    Show answer

    Answer: A. 1 only

    Statement 1 is correct: A key objective of a road block is to prevent the movement of suspects, including making it difficult for them to turn back and escape. Statement 2 is incorrect: Adequate troops should be concealed or in covered positions, not kept in the open, to protect them from hostile fire and maintain tactical surprise. Statement 3 is incorrect: While traffic management might be necessary, the primary manning of a road block in a terrorist area is determined by security requirements, threat assessment, and the need to effectively screen vehicles/personnel, not primarily by normal traffic movement patterns. Statement 4 is incorrect: Communication is vital, but it should be secure (e.g., via radio) and discreet, not audible to all nearby personnel, which could alert the terrorists to the presence and actions of the security forces.

  14. If a VIP is staying in a hotel, you should check that : 1. emergency exits are available. 2. incoming calls are screened. 3. valuables are deposited with the bodyguards. Which of the statements given above is/are correct ?

    Asked in: UPSC CISF AC EXE 2023

    1. 1 and 3 only
    2. 2 and 3 only
    3. 2 only
    4. 1 and 2 only
    Show answer

    Answer: D. 1 and 2 only

    Statement 1 is correct: Checking and ensuring the availability and accessibility of emergency exits is a fundamental security and safety protocol for any VIP, ensuring evacuation routes are known and clear in case of emergency. Statement 2 is correct: Screening incoming calls is a standard security measure to filter unwanted calls, identify potential threats, and manage communication for the VIP. Statement 3 is incorrect: While valuables need to be secured, it is not standard procedure for bodyguards to take possession of the VIP's valuables. Valuables are typically the responsibility of the VIP or may be secured in a hotel safe or other designated secure location. Bodyguards are primarily focused on personal security.

Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance (C4ISR) Systems

  1. DEFCOM is jointly organised by

    Asked in: WBPSC CS Prelims 2020

    1. Indian Defence Forces and I.I.T.s
    2. Indian Defence Forces and I.I.Sc
    3. Corps of signals and confederation of Indian Industry (C.I.I.)
    4. Armed Forces and Ministry of Information
    Show answer

    Answer: C. Corps of signals and confederation of Indian Industry (C.I.I.)

    - DEFCOM is a seminar aimed at fostering collaboration between the Indian Defence Forces and the Indian Industry in the field of Information and Communications Technology (ICT). - It provides a platform for brainstorming and discussing technological advancements relevant to defence communication.

  2. When was the Indo-Tibetan Border Police (ITBP) established in India?

    Asked in: ECONOMIC INVESTIGATOR(EO) 2019

    1. 24th October, 1971
    2. 24th October, 1962
    3. 24th October, 1965
    4. None of the above
    Show answer

    Answer: A. 24th October, 1971

    The ITBP was raised in the aftermath of the 1962 Sino-Indian War. It is a central armed police force responsible for guarding the Sino-Indian border.

Electro-Optical and Infrared (EO/IR) Sensors for Defence

  1. Which of the following countries is developing world's most powerful laser called VULCAN 20-20 ?

    Asked in: Government Dairy Supervisor and Sugar Cane

    1. South Korea
    2. United States of America
    3. Taiwan
    4. United Kingdom
    Show answer

    Answer: D. United Kingdom

    Supervisor Examination1 -2023 This question pertains to cutting-edge scientific and technological advancements globally, specifically in the field of lasers, which are areas of interest for scientific and defense-related topics.

Integrated Avionics and Platform Management Systems

  1. 'Tejas' is the name of which one of the following?

    Asked in: UPSC CDS 2 2018

    1. Main battle tank
    2. Nuclear submarine
    3. Light combat aircraft
    4. Aircraft carrier
    Show answer

    Answer: C. Light combat aircraft

    - 'Tejas' is a single-engine, delta wing, multirole light fighter designed by the Aeronautical Development Agency (ADA) in collaboration with Hindustan Aeronautics Limited (HAL) for the Indian Air Force and Indian Navy.

  2. Some of these helicopters were in Feb. 2015 Air show of Bengaluru. Match List - I (Helicopter Model) with List - II (Country/make) and find the correct answer from the codes given below : List - I A. Seaking MK41 B. KA-226. T. C. AS 565 MB Panther D. SA 321 Super Frieon List - II 1. Russia 2. India 3. France 4. USA 5. Germany A B C D (a) 5 2 3 1 (b) 5 1 4 3 (c) 3 4 5 1 (d) 2 4 5 3

    Asked in: KPSC KAS Prelims 2014

    1. (a)
    2. (b)
    3. (c)
    4. (d)
    Show answer

    Answer: A. (a)

    This question requires matching helicopter models with their country of origin or a significant operating country, likely related to the Aero India 2015 show. A. Seaking MK41 is a variant of the Sikorsky SH-3 Sea King, built under license by Westland Helicopters (UK). The MK41 variant was specifically operated by the German Navy. B. KA-226T is a Russian light utility helicopter developed by Kamov. While India is involved in a potential joint venture for its manufacture, the original make is Russian. The option linking it to India (2) might refer to the context of the Indian acquisition program (the 'T' variant is for India) or potential future license production, rather than the country of origin/make. C. AS 565 MB Panther is a multi-role helicopter produced by Eurocopter (now Airbus Helicopters), which has strong French origins. D. SA 321 Super Frelon is a heavy transport helicopter developed by Sud Aviation (now part of Airbus Helicopters) of France. It was also operated by the Soviet Union/Russia. The option linking it to Russia (1) might refer to its operation by Russia.

  3. Which of the following is the air-to-air refueller aircraft of the Indian Air Force ?

    Asked in: KPSC KAS Prelims 2015 · RPSC RAS Prelims 2016

    1. C-17 Globemaster
    2. Ilyushin-76
    3. Ilyushin-78
    4. C-130J Hercules
    Show answer

    Answer: C. Ilyushin-78

    - The IAF operates the Ilyushin Il-78MKI, a tanker variant of the Il-76 strategic airlifter. - Air-to-air refuelling significantly extends the range and endurance of combat aircraft, allowing them to stay airborne longer and travel further.

  4. Which of the following are correct about Indian Aircrafts ?

    Asked in: KPSC KAS Prelims 2015

    1. Tejas is a multirole light combat air‐ craft.
    2. Saras is the first indigenous multipur‐ pose civilian aircraft.
    3. Lakshya is a pilotless target aircraft. Select the code for the correct answer from the options given below : A. A and B only B. B and C only C. A and C only
    4. A, B and C
    Show answer

    Answer: D. A, B and C

    A. Tejas: The HAL Tejas is an Indian single-engine, light weight, all-weather, multirole light combat aircraft developed by the Aeronautical Development Agency (ADA) and produced by Hindustan Aeronautics Limited (HAL). Statement A is correct. B. Saras: The NAL Saras is the first Indian multi- purpose civilian aircraft in the light transport aircraft category. It was developed by the National Aerospace Laboratories (NAL). Statement B is correct. C. Lakshya: The DRDO Lakshya is an Indian remotely piloted high speed target drone system developed by the Aeronautical Development Establishment (ADE) of DRDO. It is used for target practice by the military. It is a pilotless target aircraft (PTA). Statement C is correct. Since all three statements are correct, the option "A, B and C" is the correct answer.

  5. As a part of ‘Make in India’ Programme, light combat helicopter production started in which of the following places in India ?

    Asked in: KPSC KAS Prelims 2017

    1. Gurugram
    2. Vizag
    3. Cochin
    4. Bengaluru
    Show answer

    Answer: D. Bengaluru

    Hindustan Aeronautics Limited (HAL), the manufacturer of the Light Combat Helicopter (LCH), has its major production and development facilities, including those for LCH, located in Bengaluru, Karnataka.

  6. Which one of the following statements about Sukhoi-30MKI fighter aircraft is *not* correct ?

    Asked in: UPSC CAPF 2009

    1. It is a twin cockpit multi-role all-weather fighter aircraft
    2. It has air-to-air refuelling capability
    3. The aircraft being manufactured by Hindustan Aeronautics Limited (Nasik)
    4. Pune is the latest base for these most potent combat aircraft of the Indian Air Force
    Show answer

    Answer: D. Pune is the latest base for these most potent combat aircraft of the Indian Air Force

    Statements A, B, and C are correct characteristics of the Sukhoi-30MKI. It is a twin-cockpit, multi-role, all-weather fighter with air-to-air refuelling capability, manufactured under license by HAL in Nashik. Statement D is incorrect because Pune (Lohegaon Air Force Station) was one of the earliest and major bases established for the Su-30MKI fleet in India, not the latest base as of 2009. Several other bases were operationalized or received aircraft later.

  7. Consider the following aircraft : Rafael MiG-29 Tejas MK-1 How many of the above are considered fifth generation fighter aircraft ?

    Asked in: UPSC IAS 2024

    1. Only one
    2. Only two
    3. All three
    4. None
    Show answer

    Answer: D. None

    Fighter aircraft generations are a classification system used to categorize jet fighters based on their technological capabilities and historical development. The key characteristics of 5th generation fighters represent a significant leap in performance, situational awareness, and survivability compared to previous generations, primarily driven by stealth and advanced sensor fusion.

  8. Which one of the following is an indigenously built light combat aircraft?

    Asked in: UPPSC Upper Mains 2013

    1. Aakash
    2. Tejas
    3. Vikrant
    4. Arjun
    Show answer

    Answer: B. Tejas

    Tejas is India's Light Combat Aircraft (LCA) program, representing a significant achievement in indigenous aerospace design and manufacturing.

  9. What is/are correct in case of Rafale fighter jet?

    Asked in: Assistant Auditor (Direct) 2021

    1. It is made in France
    2. It is made by Dassault Aviation
    3. India received first batch of five such jets in July 2020
    4. All of the above
    Show answer

    Answer: D. All of the above

    The Rafale is a twin-engine, canard-delta wing, multi-role fighter aircraft designed and manufactured by the French company Dassault Aviation. India's acquisition of the Rafale jets has been a significant development in its defense modernization program.

  10. In which squadron of the Indian Air Force has the first batch of Rafale Fighter Jets been inducted from the following ?

    Asked in: Chief Fire Officer Exam 2021

    1. Squadron 17 - Golden Arrows
    2. Squadron 52 - Dragons
    3. Squadron 6 - Cobras
    4. Squadron 4 - Tigers
    Show answer

    Answer: A. Squadron 17 - Golden Arrows

    Induction of advanced fighter aircraft and the specific squadron involved.

  11. Which one of the following modern aircrafts is based in Tezpur, Chabua and Jorhat Air bases?

    Asked in: GS MVI 08 2024 2108 2024

    1. Rafale
    2. Sukhoi-30 MKI
    3. J-20 Stealth Fighters
    4. None of the above
    Show answer

    Answer: B. Sukhoi-30 MKI

    The Sukhoi-30 MKI fighter jets are strategically based at Tezpur, Chabua, and Jorhat in Assam to bolster air defence capabilities in India's northeastern region.

Network-Centric Warfare (NCW) Architectures and Implementation

  1. Which one of the following was the main theme of Defcom India 2019 ?

    Asked in: UPSC CISF AC EXE 2020

    1. Information and Communication Technology for improved communication support to forward edges of tactical battle area
    2. Communication as a decisive catalyst for joint‐ ness
    3. Digital army infrastructure and skilled human resource
    4. Technology as a key enabler to overcome military challenges
    Show answer

    Answer: B. Communication as a decisive catalyst for joint‐ ness

    Defcom serves as a platform for interaction among military, industry, and academia to discuss advancements in military communications and their role in enhancing jointness and operational efficiency of the armed forces. The theme for each edition reflects the current priorities in defence communication.

  2. The annual 'Exercise Poorvi Akash' is conducted by

    Asked in: GS MVI 08 2024 2108 2024

    1. Eastern Air Command
    2. Northeastern Air Command
    3. Garud Special Commandos
    4. None of the above
    Show answer

    Answer: A. Eastern Air Command

    'Exercise Poorvi Akash' is an annual military exercise conducted by the Indian Air Force's Eastern Air Command.

Satellite Communication (SATCOM) for Defence Applications

  1. The motto of Defence Research and Development Organisation is -

    Asked in: RPSC RAS Prelims 2021

    1. Jagratam Aharnisham
    2. Tejasvinavadhitamastu
    3. Balasya Mulam Vigyanam
    4. Vayam Rakshamah
    Show answer

    Answer: C. Balasya Mulam Vigyanam

    - The motto 'Balasya Mulam Vigyanam' is in Sanskrit. - It translates to 'Strength's Origin is in Science'.

  2. Consider the following statement: 1. The national cadet corps was established in 1948. 2. The Sainik schools were established as a joint venture of the Central and State Government. Which of the statements is/are correct?

    Asked in: TNPSC CS Prelims 2019

    1. 1 only
    2. 2 only
    3. Both 1 and 2 correct
    4. Both 1 and 2 wrong
    Show answer

    Answer: C. Both 1 and 2 correct

    Statement 1 is correct: The National Cadet Corps (NCC) was established in 1948 under the National Cadet Corps Act, 1948. Statement 2 is correct: Sainik Schools were established as a joint venture between the Ministry of Defence (Central Government) and the respective State Governments. They are managed by the Sainik Schools Society, an autonomous organization under the Ministry of Defence.

  3. Match List-I with List-Il and select the correct answer using the code given below the lists: List-I (Defence Term) A. Arsenal B. Battery C. Conscription D. Dogfight List-II (Explanation) 1. An aenal duel bet-ween two or more aircrafts at a close range 2. Compulsory recruitment of personnel for service in the armed force 3. A unit of number of artillery guns, mobile or fixed 4. Place where arms and ammunition are manufactured and stored

    Asked in: UPSC CAPF 2009

    1. A-1, B-2, C-3, D-4
    2. A-4, B-3, C-2, D-1
    3. A-1, B-3, C-2, D-4
    4. A-4, B-2, C-3, D-1
    Show answer

    Answer: B. A-4, B-3, C-2, D-1

    Understanding military terminology is essential when dealing with topics related to defence and security. These terms cover aspects from logistics (Arsenal) and unit organization (Battery) to personnel recruitment (Conscription) and combat maneuvers (Dogfight).

Secure Communication Technologies (Cryptography, Anti-jamming, Stealth)

  1. Which one of the following is an 'end-to-end secure mobile ecosystem' developed recently by the Indian Army?

    Asked in: UPSC CDS 1 2024

    1. SANCHAR
    2. VAIBHAV
    3. SAMPARK
    4. SAMBHAV
    Show answer

    Answer: D. SAMBHAV

    - SAMBHAV stands for Secure Army Mobile Bharat Version. It is a secure mobile framework designed by the Indian Army to provide a secure platform for communication, data exchange, and various applications for its personnel, reducing dependence on potentially vulnerable commercial mobile operating systems and applications.