Qolsys Interview Questions and Answers

Q1. Find the middle element whose left and right sum is equal
Ans. 
Iterate through array to find middle element with equal left and right sum
• Iterate through array and calculate sum of elements on left and right of each element

• Return element if left sum equals right sum

• Handle edge cases like array with less than 3 elements
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Q1. What is physical security?
Ans. 
Physical security refers to measures taken to protect physical assets, resources, and personnel from unauthorized access, damage, or harm.
• Includes physical barriers such as fences, locks, and security cameras

• Involves access control systems like key cards or biometric scanners

• May also include security guards or patrols to monitor and protect a physical space

• Examples: installing security cameras in a retail store, using
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Q2. What are the barriers of physical security?
Ans. 
Physical security barriers include fences, locks, access control systems, and surveillance cameras.
• Fences can prevent unauthorized access to a property.

• Locks on doors and windows can deter intruders.

• Access control systems limit who can enter specific areas.

• Surveillance cameras can monitor and record activities for security purposes.
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Q3. Types of camera
Ans. 
There are various types of cameras including DSLR, mirrorless, point-and-shoot, action, and instant cameras.
• DSLR cameras have interchangeable lenses and are popular among professional photographers.

• Mirrorless cameras are compact and lightweight, with electronic viewfinders.

• Point-and-shoot cameras are small and easy to use for everyday photography.

• Action cameras are rugged and designed for capturing fast-paced activitie...read more
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Q4. What is ptz camera
Ans. 
A PTZ camera is a type of security camera that can pan, tilt, and zoom to provide a wider range of coverage and flexibility in monitoring.
• PTZ stands for pan, tilt, zoom

• Can be controlled remotely to adjust viewing angle and zoom level

• Used in surveillance systems for monitoring large areas

• Examples: Hikvision PTZ camera, Axis PTZ camera
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Q5. What is dome camera
Ans. 
A dome camera is a type of surveillance camera that is housed in a dome-shaped casing, providing a discreet and vandal-resistant design.
• Dome cameras are commonly used for indoor and outdoor security surveillance.

• They are often used in retail stores, banks, casinos, and homes.

• Dome cameras can be fixed or PTZ (pan-tilt-zoom) for flexible monitoring.

• The dome casing helps to protect the camera from tampering and vandalism.
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Q1. Basic oops concept
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Q1. Personal information and total experience
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Q1. Knowledge and experience
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Q1. Knowledge checking and work related questions
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Q1. Salary negotiation and notice period
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Q1. Print the largest string from the given 5 strings
Ans. 
Find the largest string from a given array of 5 strings
• Iterate through the array of strings and compare the length of each string

• Keep track of the largest string found so far

• Return the largest string at the end
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Q2. Check if the required dropdown option is displayed or not
Ans. 
Use Selenium WebDriver to locate the dropdown element and check if the required option is displayed
• Locate the dropdown element using Selenium WebDriver

• Use the Select class to interact with the dropdown

• Verify if the required option is displayed using isSelected() method
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Basic coding questions that are available with just one google search

Q1. Tell me about self,,, what is your last organization role,why join company etc
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Was very basic. Asked few question about ratio proportion, time, directions and relation based.

Was given a topic to talk about. Global warming was the topic. Quite easy and cleared it.