112-51: Network Defense Essentials

Finch, a security professional, was instructed to strengthen the security at the entrance. At the doorway, he implemented a security mechanism that allows employees to register their retina scan and a unique six- digit code, using which they can enter the office at any time.

Which of the following combinations of authentication mechanisms is implemented in the above scenario?

Below are the various steps involved in establishing a network connection using the shared key authentication process.

1.The AP sends a challenge text to the station.

2.The station connects to the network.

3.The station encrypts the challenge text using its configured 128-bit key and sends the encrypted text to the AP.

4.The station sends an authentication frame to the AP.

5.The AP uses its configured WEP key to decrypt the encrypted text and compares it with the original challenge text.

What is the correct sequence of steps involved in establishing a network connection using the shared key authentication process?

Below are various authentication techniques.

1.Retina scanner

2.One-time password

3.DNA

4.Voice recognition

Identify the techniques that fall under biometric authentication.

James was recruited as security personnel in an organization and was instructed to secure the organization's infrastructure from physical threats. To achieve this, James installed CCTV systems near gates, reception, hallways, and workplaces to capture illicit activities inside the premises, identify activities that need attention, collect images as evidence, and aid in an alarm system.

Identify the type of physical security control implemented by James in the above scenario.

Below is the list of encryption modes used in a wireless network.

1.WPA2 Enterprise with RADIUS

2.WPA3

3.WPA2 PSK

4.WPA2 Enterprise

Identify the correct order of wireless encryption modes in terms of security from high to low.

Which of the following IDS components analyzes the traffic and reports if any suspicious activity is detected?

Identify the backup mechanism that is performed within the organization using external devices such as hard disks and requires human interaction to perform the backup operations, thus, making it suspectable to theft or natural disasters.

George, a certified security professional, was hired by an organization to ensure that the server accurately responds to customer requests. In this process, George employed a security solution to monitor the network traffic toward the server. While monitoring the traffic, he identified attack signatures such as SYN flood and ping of death attempts on the server.

Which of the following categories of suspicious traffic signature has George identified in the above scenario?

Which of the following algorithms is an iterated block cipher that works by repeating the defined steps multiple times and has a 128-bit block size, having key sizes of 128, 192, and 256 bits?