Defence Technology Archives

11. Which one among the following statements about VINBAX is not correct?

Which one among the following statements about VINBAX is not correct?

It is a Joint Military Exercise between India, Vietnam and Bangladesh.

It was instituted in 2018.

Its first edition was conducted at Jabalpur.

In 2023, Indian contingent comprised the Engineer Regiment of the Bengal Engineer Group.

This question was previously asked in

UPSC CISF-AC-EXE – 2024

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Statement A is incorrect. VINBAX is a joint military exercise between India and Vietnam. It is a bilateral exercise, not trilateral involving Bangladesh.

– VINBAX stands for Vietnam India Bilateral Army Exercise.
– The exercise aims to promote cooperation, interoperability, and exchange of best practices between the armies of India and Vietnam.

– VINBAX was indeed instituted in 2018.
– The first edition was conducted in Jabalpur, India.
– The 2023 edition (4th edition) was held in Hanoi, Vietnam. The Indian contingent did comprise the Engineer Regiment of the Bengal Engineer Group, among other units.

12. Consider the following statements about Sandhayak, a Survey Vessel Shi

Consider the following statements about Sandhayak, a Survey Vessel Ship, which was delivered to the Indian Navy in December 2023:

1. One of the primary roles of the Ship is to make a full-scale coastal and deep-water hydrographic survey of ports.
2. The Ship is made to collect oceanographic and geophysical data for defence and civil applications.

Which of the statements given above is/are correct?

1 only

2 only

Both 1 and 2

Neither 1 nor 2

This question was previously asked in

UPSC CISF-AC-EXE – 2024

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Both Statement 1 and Statement 2 are correct.

INS Sandhayak (Yard 3025), the first of the four Survey Vessel (Large) ships, was delivered to the Indian Navy in December 2023 by Garden Reach Shipbuilders and Engineers (GRSE) Ltd. These vessels are designed for comprehensive hydrographic surveys.

1. A primary role of Survey Vessel (Large) ships like Sandhayak is indeed to conduct hydrographic surveys of ports, harbours, territorial waters, and Exclusive Economic Zones (EEZ), covering both coastal and deep waters.
2. These vessels are equipped with state-of-the-art hydrographic equipment, including various sonars, sensors, and data collection systems, enabling them to collect oceanographic, geophysical, and geo-spatial data crucial for naval operations, defence applications, and civil charting purposes. Both statements accurately describe the capabilities and roles of such survey vessels.

13. If a VIP is staying in a hotel, you should check that : 1. emergency

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 ?

1 and 3 only

2 and 3 only

2 only

1 and 2 only

This question was previously asked in

UPSC CISF-AC-EXE – 2023

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The correct option is D, as statements 1 and 2 are correct procedures when a VIP is staying in a hotel.

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.

VIP security protocols in a hotel involve a comprehensive assessment of the location, securing the access points, coordinating with hotel staff, planning emergency procedures, and managing the VIP’s immediate environment. Communication security and privacy are also key considerations.

14. ‘Road Block’ is done in terrorist affected areas. Which of the followi

‘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 :

1 only

2 and 4 only

1, 2 and 3

1 and 3 only

This question was previously asked in

UPSC CISF-AC-EXE – 2023

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The correct option is A, as only statement 1 is a correct principle for a road block in terrorist affected areas among the options provided.

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.

Effective road blocks in high-risk areas require careful planning, force protection measures, clear communication protocols (often covert), and layered defence to ensure the safety of personnel while maximizing the chance of interdicting targets.

15. Which of the following statements with regard to fuses are correct ?

Which of the following statements with regard to fuses are correct ?

1. Fuses are simple switches required to activate an explosive device
2. The three main types of fuses are time delay, physical action, and environment
3. Good example of time delay fuses are chemical pencils

Select the correct answer using the code given below :

1, 2 and 3

1 and 2 only

2 and 3 only

1 and 3 only

This question was previously asked in

UPSC CISF-AC-EXE – 2023

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The correct option is A, as statements 1, 2, and 3 are all correct regarding fuses.

Statement 1 is correct: Fuses initiate explosive devices, acting as a switch to trigger the main charge. Statement 2 is correct: Fuses are broadly categorized by their activation mechanism, including time delay (activated after a set period), physical action (activated by pressure, pull, etc.), and environment (activated by changes in light, temperature, etc.). Statement 3 is correct: Chemical pencils are a type of improvised time-delay fuse where a chemical reaction eats through a restraining material over time, releasing a firing pin or activating mechanism.

Fuses are critical components in ordnance and improvised explosive devices (IEDs), determining when and how the device functions. Understanding different types of fuses is important for counter-terrorism and bomb disposal operations.

16. In VIP security, counter surveillance is very important. Which of the

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 :

1 only

1, 2 and 3

2 and 3 only

1 and 3 only

This question was previously asked in

UPSC CISF-AC-EXE – 2023

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The correct answer is 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.

These are examples of physical counter-surveillance tactics used to disrupt predictable patterns and force a surveillant to take actions that might expose them. Other techniques include making unexpected turns, using reflections, and being observant of recurring individuals or vehicles.

17. With regard to CCTV monitor, which one of the following statements is

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

Monitor should be placed in a curved configuration

The monitor screen should be tilted upward to avoid reflection of overhead lighting

If possible, stacking of monitors should be avoided

Screens should be placed in a sequence, providing logical continuity with relation to location of cameras

This question was previously asked in

UPSC CISF-AC-EXE – 2023

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The correct answer is 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.

Correct practices for CCTV monitor placement often include arranging large arrays in a curve for better viewing angles (A), avoiding stacking to reduce neck strain and improve horizontal scanning (C), and arranging screens logically according to camera location to aid situational awareness (D). Reducing reflections is crucial for operator comfort and effectiveness, and tilting upwards achieves the opposite when lights are overhead.

18. Which of the following statements is/are correct ? In AK-47 Rifle, w

Which of the following statements is/are correct ?

In AK-47 Rifle, we use 7.62 mm ammunition
INSAS Rifles use ammunition of 5.56 mm
INSAS Rifle is shorter than AK-47 Rifle
AK-47 Rifle is heavier than INSAS Rifle

Select the correct answer using the code given below:

1 only

1 and 2 only

3 only

2 and 4 only

This question was previously asked in

UPSC CISF-AC-EXE – 2023

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The correct answer is B) 1 and 2 only.

Statement 1: The AK-47 rifle primarily uses 7.62x39mm ammunition. This statement is correct.
Statement 2: The INSAS (Indian Small Arms System) rifle uses 5.56x45mm NATO ammunition. This statement is correct.
Statement 3: The INSAS rifle (typically around 960mm) is generally longer than the standard fixed-stock AK-47 rifle (around 870mm). Therefore, this statement is incorrect.
Statement 4: The original milled-receiver AK-47 (~4.3 kg) is slightly heavier than the INSAS rifle (~4.15 kg with empty magazine). However, the more common stamped-receiver AKM (~3.1 kg) is significantly lighter than the INSAS. Without specifying the variant, the statement “AK-47 Rifle is heavier than INSAS Rifle” is not universally true and thus considered incorrect in this context, especially compared to common variants like the AKM. Given that statements 1 and 2 are definitively correct, and option B combines them, it implies that statements 3 and 4 are considered incorrect.

The INSAS rifle is the standard assault rifle of the Indian Army. The AK-47 and its variants are widely used globally. The difference in ammunition size (7.62mm vs 5.56mm) reflects different design philosophies regarding range, stopping power, and manageability.

19. In the context of Aviation Security, a matchbox comes under the catego

In the context of Aviation Security, a matchbox comes under the category of :

Explosive

Incendiary

Dangerous substance

Weapon

This question was previously asked in

UPSC CISF-AC-EXE – 2023

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The correct answer is B) Incendiary.

In aviation security, items are categorized based on the type of threat they pose. A matchbox contains matches, which are materials designed to ignite easily and rapidly burn. Such items are classified as incendiaries because they pose a fire risk.

Explosives are substances that detonate. Dangerous substances is a broad category that includes various hazardous materials, but incendiaries are a specific subcategory often listed separately or highlighted due to their specific fire hazard. While an incendiary device can potentially be used as a weapon, its primary classification based on its properties and the risk it poses (fire) places it under the incendiary category in aviation security regulations.

20. In X-BIS, what is meant by TIP ?

In X-BIS, what is meant by TIP ?

Threat Identification Procedure

Threat Image Projection

Tested and Identified Packet

Test Identification Parade

This question was previously asked in

UPSC CISF-AC-EXE – 2023

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The correct answer is B) Threat Image Projection.

X-BIS stands for X-ray Baggage Inspection System, commonly used in security checkpoints. TIP in the context of X-BIS refers to Threat Image Projection, which is a software feature designed to enhance the effectiveness of security screening operators.

TIP works by superimposing artificial images of prohibited or dangerous items (threats) onto the real X-ray images of bags being screened. This allows the system to test and train operators by seeing if they detect these simulated threats. It helps maintain operator vigilance and identify training needs.