NAFFCO Cctv Technician Interview Questions and Answers

Q1. What is dc machine
Ans. 
A DC machine is an electrical machine that converts mechanical energy into direct current electrical energy.
• DC machines have two main types: DC motors and DC generators.

• DC motors convert electrical energy into mechanical energy to produce motion.

• DC generators convert mechanical energy into electrical energy by generating direct current.

• DC machines are commonly used in various applications such as electric vehicles, ind
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Q1. What is ospf
Ans. 
OSPF (Open Shortest Path First) is a routing protocol used to determine the best path for data packets in a network.
• OSPF is a link-state routing protocol

• It uses Dijkstra's algorithm to calculate the shortest path

• OSPF routers exchange link-state advertisements (LSAs) to build a topology map

• It supports VLSM (Variable Length Subnet Masking) and CIDR (Classless Inter-Domain Routing)

• OSPF areas are used to divide large netwo
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Q2. What is bgp, how it works
Ans. 
BGP (Border Gateway Protocol) is a routing protocol used to exchange routing information between different autonomous systems on the internet.
• BGP is used to make routing decisions based on network policies, path attributes, and network reachability.

• It operates on TCP port 179 and uses TCP connections to exchange routing information.

• BGP routers maintain a table of IP prefixes and their corresponding AS paths to determin...read more
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Q1. Electrician 5Year experience
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Q2. And plumber 4yaer experience
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Q3. Electrician 5 Yarr experience
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Q4. Palambar 5 yaer experience
Ans. 
Yes, I have 5 years of experience as a palambar electrician.
• During my 5 years of experience, I have gained expertise in installing and maintaining electrical systems in buildings and homes.

• I have also worked on troubleshooting and repairing electrical issues.

• I am familiar with safety protocols and regulations related to electrical work.

• I have worked with a variety of tools and equipment, including multimeters, wire str...read more
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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