Cyber Security — Test 1

Correct Answer: A. A. Open systems interconnection
Explanation: The OSI model is 7-layer architecture where each layer is having some specific functionality to perform. All these layers work in collaboration for transmitting the data from 1 person to another worldwide.

Correct Answer: C. C. Unauthorized network access
Explanation: Unauthorized network access is not an example of physical layer vulnerability. The rest three – Physical theft of data & hardware, damage or destruction of data & hardware and keystroke & Other Input Logging are physical layer vulnerabilities.

Correct Answer: A. A. Physical
Explanation: In the physical layer, vulnerabilities are directly associated with physical access to networks and hardware such as unauthorised network access, damage or destruction of data & hardware and keystroke & Other Input Logging.

Correct Answer: A. A. True
Explanation: Loss of power and unauthorized change in the functional unit of hardware comes under problems and issues of the physical layer. Other such issues are unauthorised network access, damage or destruction of data & hardware and keystroke & Other Input Logging.

Correct Answer: D. D. Overloading of transport-layer mechanisms
Explanation: MAC Address Spoofing, VLAN circumvention and switches may be forced for flooding traffic to all VLAN ports are examples of data-link layer vulnerability.

Correct Answer: B. B. VLAN circumvention
Explanation: VLAN Circumvention is data-link layer vulnerability where stations are forced to make direct communication with another station by evading logical controls implemented using subnets and firewalls.

Correct Answer: A. A. Switches
Explanation: Switches may be forced for flooding traffic to all VLAN ports allowing interception of data through any device that are connected to a VLAN. It is a vulnerability of data link layer.

Correct Answer: D. D. Weak or non-existent authentication
Explanation: Weak or non-existent authentication is a vulnerability of the session layer. Route spoofing, identity & resource ID vulnerability & IP Address Spoofing are examples of network layer vulnerability.

Correct Answer: D. D. Keystroke & other input logging
Explanation: Keystroke & other input logging is an example of physical layer vulnerability. Other such physical layer vulnerabilities are unauthorized network access, damage or destruction of data & hardware and keystroke & Other Input Logging.

Correct Answer: B. B. VLAN circumvention
Explanation: VLAN circumvention is an example of data-link layer vulnerability. MAC Address Spoofing, as well as switches, may be forced for flooding traffic to all VLAN ports are some other examples of data-link layer vulnerability.