Enterprise Architecture (EA) governance requires proper oversight and separation of duties to ensure strategic alignment and risk management.
Option A (Correct):If IT application owners have sole authority over architecture approval, there is a high risk of inadequate governance, lack of strategic alignment, and potential conflicts of interest. Architecture decisions should involve multiple stakeholders, including business and security teams, to ensure compliance, security, and business alignment.
Option B (Incorrect):While having the CIO chair the architecture review board might not be ideal, it is not thegreatestconcern. The CIO is a senior leader who can provide oversight and direction, even if additional governance mechanisms should be in place.
Option C (Incorrect):Reviewing security requirements within the EA program is abest practice, as it ensures that security is embedded into enterprise architecture rather than treated as an afterthought.
Option D (Incorrect):Enterprise architecture should ideally encompass both IT and business processes.
Governing non-IT-related projects is not inherently problematic, as EA is designed to align business strategy with IT infrastructure.
Reference:ISACA CISA Review Manual -Domain 1: Information Systems Auditing Process- Covers IT governance and EA program structure.

Section: Protection of Information Assets

Explanation/Reference:
Throughput the actual rate that information is transferred. In data transmission, throughput is the amount of data moved successfully from one place to another in a given time period.
For your exam you should know below information about Network performance:
Network performance refers to measurement of service quality of a telecommunications product as seen by the customer.
The following list gives examples of network performance measures for a circuit-switched network and one type of packet-switched network (ATM):
Circuit-switched networks: In circuit switched networks, network performance is synonymous with the grade of service. The number of rejected calls is a measure of how well the network is performing under heavy traffic loads. Other types of performance measures can include noise, echo and so on.
ATM: In an Asynchronous Transfer Mode (ATM) network, performance can be measured by line rate, quality of service (QoS), data throughput, connect time, stability, technology, modulation technique and modem enhancements.
There are many different ways to measure the performance of a network, as each network is different in nature and design. Performance can also be modeled instead of measured; one example of this is using state transition diagrams to model queuing performance in a circuit-switched network. These diagrams allow the network planner to analyze how the network will perform in each state, ensuring that the network will be optimally designed.
The following measures are often considered important:
Bandwidth - Bandwidth is commonly measured in bits/second is the maximum rate that information can be transferred
Throughput - Throughput is the actual rate that information is transferred Latency - Latency is the delay between the sender and the receiver decoding it, this is mainly a function of the signals travel time, and processing time at any nodes the information traverses Jitter - Jitter is the variation in the time of arrival at the receiver of the information Error Rate - Error rate is the number of corrupted bits expressed as a percentage or fraction of the total sen
The following answers are incorrect:
Bandwidth - Bandwidth is commonly measured in bits/second is the maximum rate that information can be transferred
Latency - Latency is the delay between the sender and the receiver decoding it, this is mainly a function of the signals travel time, and processing time at any nodes the information traverses Jitter - Jitter is the variation in the time of arrival at the receiver of the information The following reference(s) were/was used to create this question:
CISA review manual 2014 page number 275

Explanation
Before selecting a SaaS vendor, the most important action is to complete a risk assessment. A risk assessment is a process of identifying, analyzing, and evaluating the potential risks associated with outsourcing software and IT infrastructure to a third-party provider. A risk assessment helps to determine the impact and likelihood of various threats, such as data breaches, service disruptions, vendor lock-in, compliance issues, and legal disputes. A risk assessment also helps to identify the mitigation strategies and controls that can reduce or eliminate the risks.
A risk assessment is more important than determining service level requirements, performing a business impact analysis (BIA), or conducting a vendor audit because it provides the basis for these other actions.
Service level requirements are the expectations and obligations that define the quality and quantity of service that the vendor must provide to the customer. A BIA is a process of assessing the potential effects of an interruption or disruption of critical business functions or processes due to an incident or disaster. A vendor audit is a process of verifying the vendor's compliance with the contract terms, service levels, security policies, and best practices.
Service level requirements, BIA, and vendor audit are all important actions for selecting a SaaS vendor, but they depend on the results of the risk assessment. For example, service level requirements should reflect the risk appetite and tolerance of the customer, which are determined by the risk assessment. A BIA should prioritize the recovery of the most critical and vulnerable business functions or processes, which are identified by the risk assessment. A vendor audit should focus on the areas of highest risk and concern, which are highlighted by the risk assessment.
Therefore, an IS auditor should recommend to management that completing a risk assessment is the most important action before selecting a SaaS vendor.
References:
SaaS checklist: Nine factors to consider when selecting a vendor
SaaS vendor management: 10 best practices to achieve success
Best Practices for Software SaaS Vendor Selection and Negotiation
How to Evaluate SaaS Providers and Solutions by Developing ... - Gartner

Stress testing is a type of performance testing that evaluates the behavior and reliability of a system under extreme conditions, such as high workload, limited resources, or concurrent users. Stress testing should ideally be carried out under a test environment with production workloads, as this would simulate the most realistic and demanding scenario for the system without affecting the actual production environment. A production environment with production workloads is not suitable for stress testing, as it could cause disruption or damage to the system and its users. A production environment with test data is not suitable for stress testing, as it could compromise the integrity and security of the production data. A test environment with test data is not suitable for stress testing, as it could underestimate the potential issues and risks that could occur in the production environment. References:
* CISA Review Manual, 27th Edition, pages 471-4721
* CISA Review Questions, Answers & Explanations Database, Question ID: 261