Isaca Updated CISA Exam Questions and Answers by ozzy

A demilitarized zone (DMZ) is a network segment that is separated from the internal network and the external network, such as the internet, by firewalls or other security devices. A DMZ provides an extra layer of security for the organization’s internal network by isolating the servers and services that need to be accessible to external users, such as a file server, from the rest of the network. A DMZ also prevents external users from accessing the internal network directly, as they have to go through two firewalls to reach it. Therefore, setting up a DMZ is an IS auditor’s best recommendation to protect anorganization from attacks when its file server needs to be accessible to external users12.

The other possible options are:

Enforce a secure tunnel connection: This means that the organization requires external users to establish a secure and encrypted connection, such as a virtual private network (VPN), to access its file server. This can provide some level of security and privacy for the data transmission, but it does not protect the file server or the internal network from attacks if the connection is compromised or if the external users are malicious. Therefore, enforcing asecuretunnel connection is not an IS auditor’s best recommendation to protect an organization from attacks when its file server needs to be accessible to external users3.

Enhance internal firewalls: This means that the organization improves the security and performance of its internal firewalls, which are devices that filter and control the network traffic between different segments of the network. This can provide some level of protection for the internal network from unauthorized or malicious access, but it does not protect the file server or the external network from attacks if the file server is exposed to the internet or if the external network is compromised. Therefore, enhancing internal firewalls is not an IS auditor’s best recommendation to protect an organization from attacks when its file server needs to be accessible to external users4.

Implement a secure protocol: This means that the organization uses a secure and standardized protocol, such as Secure File Transfer Protocol (SFTP) or Secure Shell (SSH), to transfer files between its file server and external users. This can provide some level of security and integrity for the data transmission, but it does not protect the file server or the internal network from attacks if the protocol is exploited or if the external users are malicious. Therefore, implementing a secure protocol is not an IS auditor’s best recommendation to protect an organization from attacks when its file server needs to be accessible to external users5. References: 1: What Is a DMZ Network and Why Would You Use It? | Fortinet 2: Demilitarised zone (DMZ) | Cyber.gov.au 3: What Is VPN Tunneling? | Fortinet 4: Firewall - Wikipedia 5: Secure Shell - Wikipedia

Implementing incident escalation procedures is the best way to ensure that an incident receives attention from appropriate personnel in a timely manner, because it defines the roles and responsibilities, communication channels, and escalation criteria for handlingdifferent types of incidents34. Incident escalation procedures help to prioritize and coordinate the response efforts and ensure that the incident is resolved by the most qualified and authorized personnel. Completing the incident management log, broadcasting an emergency message, and requiring a dedicated incident response team are not sufficient to ensure that an incident receives attention from appropriate personnel in a timely manner, because they do not specify how to escalate the incident based onits severity, impact,or complexity. References: 3: CISA Review Manual (Digital Version), Chapter 6, Section 6.3.2 4: CISA Online Review Course, Module 6, Lesson 3

An IT balanced scorecard (BSC) is a performance metric that is used to identify, improve, and control the various functions and outcomes of an IT department or organization. An IT BSC is based on the concept of the balanced scorecard, which was introduced by Robert Kaplan and David Norton in 1992 as a strategic management system that translates the vision and strategy of an organization into measurable objectives and actions. An IT BSC adapts the balanced scorecard framework to the specific needs and goals of the IT function, aligning it with the business strategy and value proposition.

An IT BSC typically consists of four perspectives that help managers plan, implement, and evaluate the IT performance: customer, internal process, learning and growth, and financial. Each perspective defines a set of objectives, measures, targets, and initiatives that reflect the IT contribution to the organization’s success. For example, the customer perspective may measure the satisfaction and retention of internal and external customers who use IT services or products; the internal process perspective may measure the efficiency and effectiveness of IT processes such as development, delivery, support, or security; the learning and growth perspective may measure the skills, knowledge,innovation, and culture of the IT staff; and the financial perspective may measure the costs, benefits, and return on investment of IT projects or assets.

An IT BSC provides a new IS auditor with the most useful information to evaluate overall IT performance because it:

Provides a comprehensive and balanced view of the IT function from multiple angles and stakeholders

Links the IT objectives and activities to the business strategy and value creation

Enables a clear communication and alignment of expectations and priorities among IT managers, staff, customers, and other stakeholders

Facilitates a continuous monitoring and improvement of IT performance based on data-driven feedback and analysis

Supports a holistic and integrated approach to IT governance, risk management, and compliance

Therefore, an IT BSC is a valuable tool for a new IS auditor to assess how well the IT function is fulfilling its mission and delivering value to the organization.

References:

The IT Balanced Scorecard (BSC) Explained - BMC Software

What Is a Balanced Scorecard (BSC), How Is it Used in Business?

Lost in the Woods: COBIT 2019 and the IT Balanced Scorecard - ISACA

The best way to track organizational data in a BYOD environment is to enroll the personal devices in the organization’s mobile device management (MDM) program. This will allow the organization to monitor, control, and secure the data on the devices remotely. Employees must also report lost or stolen devices and sign the acceptable use policy, but these are not sufficient to enable tracking of data. References: Info Technology & Systems Resources |COBIT, Risk, Governance … - ISACA, section “Book IT Control Objectives for Sarbanes-Oxley, 4th Edition | Digital | English”