CCT.251 Exam 3 Questions and Answers
Which type of jailbreaking allows user-level access but does not allow iBoot-level
access? - ANS-userland
You are a passenger in an airport terminal. You glance across the terminal and notice a
man peering over the shoulder over a young woman as she uses her tablet. What do
you think he is doing? - ANS-Shoulder surfing
What is the term for gaining primary kernel access to an Android device? - ANS-Rooting
Which of the following allows an Android user to attain privileged control of the device? -
ANS-SuperOneClick
Jack receives a text message on his phone advising him of a major attack at his bank.
The message includes a link to check his accounts. After he clicks the link, an attacker
takes control of his accounts in the background. Which of the following attacks is Jack
facing? - ANS-Smishing
Which of the following tools is a vulnerability scanner for Android devices? - ANS-X-ray
Which of the following modbus-cli commands is used by attackers to manipulate the
register values in a target PLC device? - ANS-modbus write %MW100 2 2 2 2 2 2 2 2
modbus write 400101 2 2 2 2 2 2 2 2
Which of the following Purdue levels is commonly referred to as an industrial
demilitarized zone (IDMZ)? - ANS-Level 3.5
Which of the following is the most popular shortrange communication technology for IoT
devices? - ANS-Zigbee
In one of the following IoT attacks, attackers intercept legitimate messages from a valid
communication and continuously send the intercepted message to the target device to
perform a denial-of-service attack or crash the target device. Which is this IoT attack? -
ANS-Replay attack
Within IoT architecture, which of the following carries out message routing and
identification? - ANS-Access Gateway layer
Within the Attify Zigbee Framework, which of the following is used to discover target
devices within range? - ANS-zbstumbler
