CISSP Exam Dumps - Certified Information Systems Security Professional (CISSP)

 A sandbox is a security mechanism that isolates a potentially malicious code or application from the rest of the system, preventing it from accessing or modifying any sensitive data or resources1. A sandbox can be implemented at the operating system, application, or network level, and can provide a safe environment for testing, debugging, or executing untrusted code. A sandbox is the most effective countermeasure to a malicious code attack against a mobile system, as it can prevent the code from spreading, stealing, or destroying any information on the device. Change control, memory management, and PKI are not directly related to preventing or mitigating malicious code attacks on mobile systems. References: 1: CISSP All-in-One Exam Guide, Eighth Edition, Chapter 8, page 507.

A vulnerability test is a type of security assessment that identifies and analyzes the security weaknesses in an information system. The purpose of a vulnerability test is to evaluate the effectiveness of security controls and to provide recommendations for improvement. A vulnerability test does not exploit the security weaknesses or measure the system performance. A vulnerability test is also different from a penetration test, which is a type of security assessment that attempts to exploit the security weaknesses and gain unauthorized access to the system. A vulnerability test is also not related to disaster recovery planning, which is a process of preparing for and recovering from a disruptive event that affects the availability of an information system. 

Temporal Key Integrity Protocol (TKIP) supports multicast and broadcast messages by using a group temporal key that is shared by all the devices in the same wireless network. This key is used to encrypt and decrypt the messages that are sent to multiple recipients at once. TKIP also supports unicast messages by using a pairwise temporal key that is unique for each device and session. TKIP does not support coordination of IEEE 802.11 protocols, as it is a protocol itself that was designed to replace WEP. TKIP is compatible with WEP systems, but it does not support them, as it provides more security features than WEP. TKIP does not support synchronization of multiple devices, as it does not provide any clock or time synchronization mechanism . References: 1: Temporal Key Integrity Protocol - Wikipedia 2: Wi-Fi Security: Should You Use WPA2-AES, WPA2-TKIP, or Both? - How-To Geek

The most important factor in designing a biometric access system if it is essential that no one other than authorized individuals are admitted is the False Acceptance Rate (FAR). FAR is the probability that a biometric system will incorrectly accept an unauthorized user or reject an authorized user2. FAR is a measure of the security or accuracy of the biometric system, and it should be as low as possible to prevent unauthorized access. False Rejection Rate (FRR), Crossover Error Rate (CER), and Rejection Error Rate are not as important as FAR, as they are related to the usability or convenience of the biometric system, rather than the security. FRR is the probability that a biometric system will incorrectly reject an authorized user or accept an unauthorized user. CER is the point where FAR and FRR are equal, and it is used to compare the performance of different biometric systems. Rejection Error Rate is the probability that a biometric system will fail to capture or process a biometric sample. References: 2: CISSP For Dummies, 7th Edition, Chapter 4, page 95.

 Heuristic is the technique that best describes antivirus software that detects viruses by watching anomalous behavior. Heuristic is a method of virus detection that analyzes the behavior and characteristics of the program or file, rather than comparing it to a known signature or pattern. Heuristic can detect unknown or new viruses that have not been identified or cataloged by the antivirus software. However, heuristic can also generate false positives, as some legitimate programs or files may exhibit suspicious or unusual behavior12. References: 1: What is Heuristic Analysis?32: Heuristic Virus Detection4