CST CST Network Security & Cybersecurity for Surveillance 3

Question 1

What is the BEST method to verify the integrity of a firmware update file before installing it on a surveillance device?

Accepted Answer

Verify the file's cryptographic hash (MD5/SHA) against the manufacturer's published value

Answer

Check the file size only

Answer

Install it and see if the device boots

Answer

Check the file date

Question 2

What is the function of a DMZ (demilitarized zone) in a surveillance network architecture?

Accepted Answer

To expose specific surveillance services to the internet while protecting the internal network

Answer

To store video footage offline

Answer

To prevent cameras from overheating

Answer

To balance power across PoE switches

Question 3

Which practice helps protect against brute-force attacks on IP camera login portals?

Accepted Answer

Enabling account lockout after a set number of failed login attempts

Answer

Using the same password on all devices

Answer

Disabling passwords on internal cameras

Answer

Using port 80 for all camera access

Question 4

What is role-based access control (RBAC) in the context of a surveillance system?

Accepted Answer

Assigning specific permissions to users based on their job function

Answer

A method of configuring camera angles remotely

Answer

A type of motion detection algorithm

Answer

A storage compression format

Question 5

Why should unused network ports on a surveillance switch be administratively disabled?

Accepted Answer

To prevent unauthorized devices from being plugged into the network

Answer

To free up bandwidth for video streams

Answer

To reduce electricity consumption significantly

Answer

To improve PoE delivery to active ports

Question 6

A CST technician is asked to perform a security audit on a surveillance system. Which tool would BEST identify open, potentially vulnerable ports on surveillance devices?

Accepted Answer

A port scanner such as Nmap

Answer

A multimeter

Answer

A cable tester

Answer

A spectrum analyzer