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Introduction of ISC Certification

The CISSP certification was developed by the International Information Systems Security Certification Consortium (ISC) and is widely considered one of the most difficult certifications to attain. The CISSP exam tests for knowledge of concepts such as network security, software security, cryptography, physical security, and general security principles. Candidates must pass a rigorous 8-hour long exam and demonstrate proficiency in at least 10 out of 12 knowledge areas. Are worried about the study material for the exam? Keep calm, I have the solution. That solution is CISSP Dumps, that will guide and help in study for the CISSP Exam.

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ISC Certified Information Systems Security Professional (CISSP) Sample Questions (Q131-Q136):

NEW QUESTION # 131
The equation used to calculate the total number of symmetric keys (K) needed for a group of users
(N)
to communicate securely with each other is given by which of the following?

A. K(N + 1)/ 2
B. K(N - 1)/ 2
C. N(N - 1)/ 2
D. N(K - 1)/ 2

Answer: C

Explanation:
The formula is: Total number of users multiplied by total number of users minus 1,
the results are then divided by 2)
When using symmetric algorithms, the sender and receiver use the same key for encryption and
decryption functions. Each pair of users who want to exchange data using symmetric key
encryption must have two instances of the same key. This means that if Dan and Iqqi want to
communicate, both need to obtain a copy of the same key. If Dan also wants to communicate
using symmetric encryption with Norm and Dave, he needs to have three separate keys, one for
each friend. This might not sound like a big deal until Dan realizes that he may communicate with
hundreds of people over a period of several months, and keeping track and using the correct key
that corresponds to each specific receiver can become a daunting task.
If ten people needed to communicate securely with each other using symmetric keys, then 45 keys
would need to be kept track of. If 100 people were going to communicate, then 4,950 keys would
be involved.
The equation used to calculate the number of symmetric keys needed is N(N - 1)/ 2 = number of
keys
The following answers are incorrect:
K(N - 1)/ 2
N(K - 1)/ 2
K(N + 1)/ 2
The following reference(s) were/was used to create this question:
Harris, Shon (2012-10-18). CISSP All-in-One Exam Guide, 6th Edition (p. 782). McGraw-Hill.
Kindle Edition.

NEW QUESTION # 132
To minimize the vulnerabilities of a web-based application, which of the following FIRST actions will lock down the system and minimize the risk of an attack?

A. Install an antivirus on the server
B. Review access controls
C. Apply the latest vendor patches and updates
D. Run a vulnerability scanner

Answer: C

NEW QUESTION # 133
Proxies works by transferring a copy of each accepted data packet from one network to another, thereby masking the:

A. data's details.
B. data's owner.
C. data's payload.
D. data's origin.

Answer: D

Explanation:
The application firewall (proxy) relays the traffic from a trusted host running a specific application to an untrusted server. It will appear to the untrusted server as if the request originated from the proxy server.
"Data's payload" is incorrect. Only the origin is changed. "Data's details" is incorrect. Only the origin is changed. "Data's owner" is incorrect. Only the origin is changed.
References: CBK, p. 467 AIO3, pp. 486 - 490

NEW QUESTION # 134
Which is MOST important when negotiating an Internet service provider (ISP) service-level agreement (SLA) by an organization that solely provides Voice over Internet Protocol (VoIP) services?

A. Availability of network services
B. Financial penalties in case of disruption
C. Mean time to repair (MTTR)
D. Quality of Service (QoS) between applications

Answer: D

Explanation:
The most important factor when negotiating an Internet service provider (ISP) service-level agreement (SLA) by an organization that solely provides Voice over Internet Protocol (VoIP) services is Quality of Service (QoS) between applications. An ISP SLA is a contract that defines the expectations, responsibilities, and guarantees between an ISP and a customer, regarding the delivery and performance of the internet services. An ISP SLA can include various terms and conditions, such as availability, reliability, speed, latency, throughput, or security of the internet services, and the metrics, measurements, and penalties for the compliance or non-compliance of the ISP SLA. QoS is a term that describes the ability of a network or a service to provide the desired level of performance, efficiency, and satisfaction for the applications or the users that use the network or the service. QoS can be influenced by various factors, such as bandwidth, latency, jitter, or packet loss, and it can be measured by various metrics, such as delay, throughput, or error rate. QoS between applications is the QoS that is achieved or maintained between the applications that communicate or interact over the network or the service, such as VoIP applications. QoS between applications is the most important factor when negotiating an ISP SLA by an organization that solely provides VoIP services, as VoIP services are highly sensitive and dependent on the QoS between applications, and any degradation or variation in the QoS between applications can affect the quality, functionality, and usability of the VoIP services34.
References: CISSP CBK, Fifth Edition, Chapter 4, page 356; 2024 Pass4itsure CISSP Dumps, Question 17.

NEW QUESTION # 135
What is the act of obtaining information of a higher sensitivity by combining information from lower levels of sensitivity?

A. Aggregation
B. Data mining
C. Inference
D. Polyinstantiation

Answer: A

Explanation:
Aggregation is the act of obtaining information of a higher sensitivity by combining information from lower levels of sensitivity.
The incorrect answers are:
Polyinstantiation is the development of a detailed version of an object from another object using different values in the new object.
Inference is the ability of users to infer or deduce information about data at sensitivity levels for which they do not have access privilege.
Data mining refers to searching through a data warehouse for data correlations.
Sources:
KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten
Domains of Computer Security, John Wiley & Sons, 2001, Chapter 7: Applications and
Systems Development (page 261).
KRUTZ, Ronald & VINES, Russel, The CISSP Prep Guide: Gold Edition, Wiley Publishing
Inc., 2003, Chapter 7: Database Security Issues (page 358).

NEW QUESTION # 136
......

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