Exam – 300 Questions 2026 with Answers &
Rationales
Section 1: System Design (Questions 1–50)
1. What is the first step when designing a network video surveillance system for a
customer?
A) Selecting the most expensive cameras available
B) Performing a thorough site survey and risk assessment
C) Ordering all equipment immediately
D) Installing network cabling
✅ Correct Answer: B
Rationale: A site survey and risk assessment are essential to understand the customer's
security needs, identify critical areas to monitor, evaluate lighting conditions, determine
camera placement, and assess network infrastructure requirements before equipment
selection .
2. When calculating storage requirements for a surveillance system, which three factors
are most critical?
A) Camera color, mounting height, and cable type
B) Resolution, frame rate, and compression method
C) Brand name, warranty period, and price
D) Power consumption, weight, and operating temperature
✅ Correct Answer: B
Rationale: Storage requirements are primarily determined by the number of cameras
multiplied by the bitrate (which is influenced by resolution, frame rate, and compression
method—H.264 vs. H.265) and retention period. Higher resolution and frame rates
increase bitrate and storage needs .
3. A customer requires 30 days of video retention for 20 cameras at 1080p resolution with
H.264 compression at 10 fps. Approximately how much storage is needed?
,A) 1-2 TB
B) 5-10 TB
C) 15-25 TB
D) 50-100 TB
✅ Correct Answer: C
*Rationale: A single 1080p H.264 camera at 10 fps typically generates 0.5-1 TB per month.
For 20 cameras, this equates to 10-20 TB. Storage calculators from Axis should be used for
precise estimates .*
4. Which camera placement would be MOST effective for identifying faces at a building
entrance?
A) 15 meters high pointing straight down
B) 2 meters high, pointed at face level
C) Behind a glass window with glare
D) Pointing directly into the afternoon sun
✅ Correct Answer: B
*Rationale: For facial identification, cameras should be mounted 2-2.5 meters high,
angled to capture faces directly. Higher mounting reduces pixel density on faces, making
identification difficult. Avoid backlighting and obstructions .*
5. What is the primary purpose of a site survey before installing network cameras?
A) To test the Wi-Fi speed
B) To identify optimal camera positions, lighting conditions, and potential obstructions
C) To measure ambient temperature
D) To count the number of employees
✅ Correct Answer: B
Rationale: A site survey evaluates lighting (day/night), potential blind spots, vandalism
risks, network infrastructure availability, and mounting surfaces to determine optimal
camera placement and specifications .
6. In a retail store, which of the following areas should have primary camera coverage?
,A) Storage rooms only
B) Entrances and exits, cash registers, high-value merchandise areas
C) The parking lot only
D) Break rooms only
✅ Correct Answer: B
Rationale: Primary coverage should focus on critical areas where security risks are
highest: entrances (identify people entering/exiting), cash registers (transaction
monitoring), and high-value merchandise (theft prevention and detection) .
7. When designing a surveillance system for a parking lot at night, which camera feature
is MOST important?
A) Wide Dynamic Range (WDR)
B) Excellent low-light performance or built-in IR illumination
C) Audio recording capability
D) PTZ functionality
✅ Correct Answer: B
Rationale: Parking lots have minimal ambient light at night. Cameras must have strong
low-light sensitivity (measured in lux) or built-in infrared (IR) illumination to capture
usable images. WDR is for high-contrast scenes, not darkness .
8. What is the "pixel density" recommendation for facial identification according to
industry standards?
A) 10 pixels per face
B) 50 pixels per face
C) 100 pixels per face
D) 500 pixels per face
✅ Correct Answer: C
*Rationale: Industry standards (such as those from Axis) recommend approximately 100-
125 pixels across the width of a face for reliable identification. This helps determine
required resolution based on distance and lens selection .*
9. Which network video surveillance system design best practices help ensure high
availability? (Select all that apply.)
, A) Single point of failure is acceptable
B) Redundant power supplies on servers
C) RAID storage configuration
D) Single network switch for all cameras
✅ Correct Answer: B, C
Rationale: High availability design includes redundant power supplies for recording
servers, RAID storage to protect against drive failure, and redundant network switches.
Single points of failure should be eliminated .
10. What is the recommended method for selecting the correct lens for a camera
installation?
A) The widest lens possible for maximum coverage
B) The longest telephoto lens to see details far away
C) Using the lens calculator based on desired field of view and distance to subject
D) The cheapest lens available
✅ Correct Answer: C
Rationale: Lens selection should use calculation tools that consider sensor size, desired
field of view (horizontal and vertical), and distance to the target area. Varifocal lenses
offer flexibility to adjust after installation .
11. When designing a system for an outdoor area with extreme temperature variations
(from -20°C to +50°C), what specification is CRITICAL?
A) Camera color
B) Operating temperature range
C) Number of pixels
D) Frame rate
✅ Correct Answer: B
Rationale: Outdoor cameras must have operating temperature ranges that accommodate
local climate extremes. Axis offers cameras with heating and cooling capabilities for
extreme environments. Failure to consider temperature can cause equipment failure .
12. A customer wants to monitor a large open area with the ability to zoom in on details.
Which camera type is most suitable?