Log analysis is the most efficient technique for automating the identification of multiple transactions by the same user originating from geographically different IP addresses. It allows the organization to analyze patterns in real-time or batch processing by leveraging tools that process logs for anomalies such as conflicting geographic locations for the same user session.

Functionality is the set of attributes that bears on the existence of a set of functions and their specified properties. The functions are those that satisfy stated or implied needs. Choice B refers to portability, choice C refers to reliability andchoice D refers to efficiency.

Section: Governance and Management of IT

The primary concern when negotiating a contract for a hot site is the availability of the site in the event of multiple disaster declarations. A hot site is a fully equipped alternative facility that can be used to resume business operations in the event of a disaster. However, if multiple clients of the hot site provider declare a disaster at the same time, there may be a shortage of resources or capacity to accommodate all of them.
Therefore, the contract should specify the terms and conditions for ensuring the availability and priority of the hot site for the organization. The other options are not as important as availability, as they do not affect the ability to use the hot site in a disaster situation. Coordination with the site staff in the event of multiple disaster declarations is a logistical issue that can be resolved by communication and planning. Reciprocal agreements with other organizations are alternative arrangements that can be used to share resources or facilities in a disaster, but they may not be asreliable or suitable as a hot site. Complete testing of the recovery plan is a good practice that can help validate and improve the effectiveness of the recovery plan, but it is not a concern for negotiating a contract for a hot site. References: CISA Review Manual (Digital Version), Chapter
4, Section 4.2.3

Explanation/Reference:
Although biometrics provides only single-factor authentication, many consider it to be an excellent method for user authentication.

Explanation
Flooding the site with an excessive number of packets is an attack technique that will succeed because of an inherent security weakness in an Internet firewall. This type of attack is also known as a denial-of-service (DoS) attack or a distributed denial-of-service (DDoS) attack if it involves multiple sources. The aim of this attack is to overwhelm the network bandwidth or the processing capacity of the firewall or the target system, rendering it unable to respond to legitimate requests or perform its normal functions. An Internet firewall is a device or software that monitors and controls incoming and outgoing network traffic based on predefined rules. A firewall can block or allow traffic based on various criteria, such as source address, destination address, port number, protocol type, application type, etc. However, a firewall cannot prevent traffic from reaching its interface or distinguish between legitimate and malicious traffic based on its content or behavior.
Therefore, a firewall is vulnerable to flooding attacks that exploit its limited resources. Phishing is an attack technique that involves sending fraudulent emails or messages that appear to come from legitimate sources, such as banks, government agencies, online services, etc., in order to trick recipients into revealing their personal or financial information, such as passwords, credit card numbers, bank account details, etc., or into clicking on malicious links or attachments that can infect their systems with malware or ransomware.
Phishing does not exploit an inherent security weakness in an Internet firewall, but rather exploits human psychology and social engineering techniques. A firewall cannot prevent phishing emails or messages from reaching their intended targets, unless they contain some identifiable features that can be filtered out by the firewall rules. However, a firewall cannot detect or prevent users from responding to phishing emails or messages or from opening malicious links or attachments. Using a dictionary attack of encrypted passwords is an attack technique that involves trying to guess or crack passwords by using a list of common or likely passwords or by using a brute-force method that tries all possible combinations of characters. This type of attack does not exploit an inherent security weakness in an Internet firewall, but rather exploits weak or poorly chosen passwords or weak encryption algorithms. A firewall cannot prevent a dictionary attack of encrypted passwords, unless it has some mechanisms to detect and block repeated or suspicious login attempts or to enforce strong password policies. However, a firewall cannot protect passwords from being stolen or intercepted by other means, such as phishing, malware, keylogging, etc. Intercepting packets and viewing passwords is an attack technique that involves capturing and analyzing network traffic that contains sensitive information, such as passwords, credit card numbers, bank account details, etc., in order to use them for malicious purposes. This type of attack does not exploit an inherent security weakness in an Internet firewall, but rather exploits insecure or unencrypted network communication protocols or channels. A firewall cannot prevent packets from being intercepted and viewed by unauthorized parties, unless it has some mechanisms to encrypt or obfuscate the network traffic or to authenticate the source and destination of the traffic. However, a firewall cannot protect packets from being modified or tampered with by other means, such as man-in-the-middle attacks, replay attacks, etc. References: ISACA CISA Review Manual 27th Edition, page
300

Explanation
The greatest concern for an IS auditor when reviewing IT policies and procedures that are not regularly reviewed and updated is that policies and procedures might not reflect current practices. Policies are documents that define the goals, objectives, and guidelines for an organization’s information systems and resources. Procedures are documents that describe the steps, tasks, or activities for implementing or executing policies. Policies and procedures should be regularly reviewed and updated to ensure that they are relevant, accurate, consistent, and effective for the organization’s information systems and resources. Policies and procedures that are not regularly reviewed and updated might not reflect current practices, as they might be outdated, obsolete, or incompatible with the current state or needs of the organization’s information systems and resources. This can cause confusion, inconsistency, inefficiency, or noncompliance among users or stakeholders who rely on policies and procedures for guidance or direction. Policies and procedures might not include new systems and corresponding process changes is a possible concern for an IS auditor when reviewing IT policies and procedures that are not regularly reviewed and updated, but it is not the greatest one.
Policies and procedures might not include new systems and corresponding process changes, as they might be unaware of or unresponsive to the introduction or modification of information systems or resources within the organization. This can cause gaps, overlaps, or conflicts among policies and procedures that affect different information systems or resources.

When validating a data analytic algorithm that has never been used before, the primary consideration should be ensuring completeness and accuracy of the algorithm’s output. This ensures that the algorithm processes data correctly, produces reliable results, and supports decision-making or audit objectives effectively. Without validated accuracy and completeness, other factors such as speed or visualization enhancements are irrelevant.

Section: Information System Operations, Maintenance and Support
Explanation/Reference:

Section: Information System Acquisition, Development and Implementation

Section: Information System Acquisition, Development and Implementation
Explanation/Reference:
Isolation – The isolation property ensures that the concurrent execution of transactions results in a system
state that would be obtained if transactions were executed serially, i.e. one after the other.
For CISA exam you should know below information about ACID properties in DBMS:
Atomicity – Atomicity requires that each transaction is “all or nothing”: if one part of the transaction fails, the
entire transaction fails, and the database state is left unchanged. An atomic system must guarantee
atomicity in each and every situation, including power failures, errors, and crashes. To the outside world, a
committed transaction appears (by its effects on the database) to be indivisible (“atomic”), and an aborted
transaction does not happen.
Consistency – The consistency property ensures that any transaction will bring the database from one valid
state to another. Any data written to the database must be valid according to all defined rules, including but
not limited to constraints, cascades, triggers, and any combination thereof. This does not guarantee
correctness of the transaction in all ways the application programmer might have wanted (that is the
responsibility of application-level code) but merely that any programming errors do not violate any defined
rules.
Isolation – The isolation property ensures that the concurrent execution of transactions results in a system
state that would be obtained if transactions were executed serially, i.e. one after the other. Providing
isolation is the main goal of concurrency control. Depending on concurrency control method, the effects of
an incomplete transaction might not even be visible to another transaction. [citation needed]
Durability – Durability means that once a transaction has been committed, it will remain so, even in the
event of power loss, crashes, or errors. In a relational database, for instance, once a group of SQL
statements execute, the results need to be stored permanently (even if the database crashes immediately
thereafter). To defend against power loss, transactions (or their effects) must be recorded in a non-volatile
memory.
The following were incorrect answers:
Consistency – The consistency property ensures that any transaction will bring the database from one valid
state to another. Any data written to the database must be valid according to all defined rules, including but
not limited to constraints, cascades, triggers, and any combination thereof. This does not guarantee
correctness of the transaction in all ways the application programmer might have wanted (that is the
responsibility of application-level code) but merely that any programming errors do not violate any defined
rules.
Durability – Durability means that once a transaction has been committed, it will remain so, even in the
event of power loss, crashes, or errors.
Atomicity requires that each transaction is “all or nothing”: if one part of the transaction fails, the entire
transaction fails, and the database state is left unchanged.
The following reference(s) were/was used to create this question:
CISA review manual 2014 Page number 218

Business processes should be the primary focus of an IS auditor when developing a risk-based IS audit program, because they represent the core activities and functions of the organization that support its objectives and goals. Business processes also involve the use of IT resources and systems that may pose risks to the organization’s performance and compliance. A risk-based IS audit program should identify and assess the risks associated with the business processes and determine the appropriate audit scope and procedures to provide assurance on their effectiveness and efficiency. Portfolio management, business plans, and IT strategic plans are also relevant factors for developing a risk-based IS audit program, but they are not as important as business processes. References: CISA Review Manual (Digital Version), Chapter 2, Section 2.2.1