PK0-005 Basics of IT Infrastructure and IT Project Management Practice Test 1 — 15 Questions

Question 1

A project manager is deploying a new web application to a cloud environment. The application requires high availability and automatic scaling based on traffic. Which IT infrastructure component should the project manager use to meet these requirements?

Accepted Answer

Load balancer. A load balancer distributes incoming traffic across multiple instances of the web application, enabling high availability by rerouting traffic if an instance fails, and automatic scaling by integrating with cloud auto-scaling groups to add or remove instances based on demand. This directly meets the requirements for both high availability and automatic scaling.

Answer

Firewall

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DNS server

Answer

VPN concentrator

Question 2

During a database migration project, the team encounters an error when trying to connect to the new database server from the application server. The network team confirms that the ports are open and the firewall rules are correct. The database team reports that the database service is running and listening on the expected port. Which of the following is the MOST likely cause of the connectivity issue?

Accepted Answer

Missing route on the database server's routing table. The most likely cause is a missing route on the database server's routing table. Even with correct firewall rules and an active database service, the database server may not have a return route to the application server's subnet, causing packets to be dropped. This is a common Layer 3 issue where the destination server can receive traffic but cannot reply because it lacks a route back to the source.

Answer

Misconfigured DNS server

Answer

Incorrect subnet mask on the application server

Answer

Expired SSL certificate on the database server

Question 3

A project manager is overseeing the implementation of a new customer relationship management (CRM) system. The vendor requires access to the company's internal network to install and configure the software. Which of the following is the BEST practice to ensure security while allowing vendor access?

Accepted Answer

Set up a VPN connection with two-factor authentication. Setting up a VPN connection with two-factor authentication is the best practice because it creates an encrypted tunnel over the internet, ensuring data confidentiality and integrity, while two-factor authentication adds an extra layer of security beyond just a password. This approach allows the vendor to access only the internal network resources necessary for installation and configuration, without exposing the entire network to unauthenticated or unencrypted access.

Answer

Provide the vendor with access to the guest Wi-Fi network

Answer

Allow the vendor to use remote desktop protocol (RDP) directly over the internet

Answer

Create a local user account with administrative privileges for the vendor

Question 4

Which TWO of the following are key considerations when designing an IT infrastructure for a new data center?

Accepted Answer

Redundant power supplies and UPS systems. Redundant power supplies and UPS systems are critical for ensuring high availability and fault tolerance in a data center. They protect against power outages, fluctuations, and hardware failures, maintaining uptime for critical IT services. This aligns with industry best practices for Tier II and above data center designs.

Answer

Open floor plan with no raised flooring

Answer

Use of low-cost, consumer-grade hardware

Answer

Single point of failure for critical systems

Question 5

A project manager is leading a project to upgrade the storage area network (SAN) for a hospital's electronic health records (EHR) system. The current SAN is reaching capacity and has performance issues during peak hours. The new SAN must support high availability with synchronous replication between two data centers located 10 km apart. The project budget is tight, and the timeline is aggressive. During a risk assessment, the project manager identifies that the fiber optic cable between the data centers is owned by a third-party provider and has a history of outages. The project sponsor is concerned about meeting the go-live date and asks the project manager to recommend a course of action to mitigate the risk of cable outages affecting the SAN replication. Which of the following is the BEST course of action?

Accepted Answer

Work with the fiber provider to install a second, diverse fiber path between the data centers. Option C is correct because the risk is specifically a single point of failure in the fiber path between data centers. Installing a second, diverse fiber path eliminates this single point of failure, ensuring synchronous replication can continue even if one cable is cut. This directly addresses the sponsor's concern about go-live delays due to cable outages, without changing the replication mode or adding unnecessary hardware.

Answer

Purchase redundant SAN controllers to provide failover in case of a controller failure

Answer

Increase the synchronous replication interval to reduce the impact of potential outages

Answer

Replace synchronous replication with asynchronous replication over the existing WAN connection

Question 6

A project manager is planning the deployment of a new web application. The IT team has identified the following requirements: the application must be accessible 24/7, handle traffic spikes, and maintain session persistence. Which TWO infrastructure components should the project manager include in the design to meet these requirements?

Accepted Answer

An auto-scaling group of web servers. An auto-scaling group of web servers (A) ensures the application can handle traffic spikes by automatically adding or removing instances based on demand, supporting 24/7 availability. A load balancer with session affinity (E) distributes traffic across the web servers while maintaining session persistence, ensuring that a user's requests are consistently routed to the same server. Together, these components address all three requirements: high availability, scalability, and session stickiness.

Answer

A content delivery network (CDN)

Answer

A single web server with a large instance type

Answer

A database cluster with replication

Question 7

A project manager is deploying a new application server with IP 10.0.1.15. The system administrator reports that the server is reachable from the network switch but not from other devices on the same subnet. Based on the exhibit, what is the most likely cause?

Accepted Answer

The server's network interface is in a misconfigured VLAN. The exhibit shows the server's IP address is 10.0.1.15/24, but the switch port is configured for VLAN 20, while the rest of the devices on the same subnet (10.0.1.0/24) are likely in VLAN 10. Since VLANs segment broadcast domains, the server cannot communicate with other devices on the same IP subnet because Layer 2 frames are isolated to VLAN 20. The server is reachable from the switch because the switch itself can forward traffic to any VLAN, but other devices in VLAN 10 cannot reach the server without a Layer 3 router.

Answer

The server has a missing default gateway

Answer

The server is powered off

Answer

A firewall is blocking ICMP traffic

Question 8

You are the project manager for a mid-sized company that provides an online customer portal. The portal is hosted on a single virtual machine (VM) in the company's on-premises data center with 4 vCPUs, 16 GB RAM, and a 500 GB HDD. The VM runs Windows Server 2019 and hosts both the web server (IIS) and the database (SQL Server Express). Users have been reporting slow performance, especially during peak hours (10 AM - 2 PM). The system administrator notes that CPU usage spikes to 95% during those times, and disk I/O latency averages 50 ms. The company's budget is limited, and they want a cost-effective solution that can be implemented within two weeks. The project sponsor suggests migrating to the cloud, but the IT director is concerned about security and compliance. The company has no existing cloud infrastructure or virtual private network (VPN) to the cloud. You need to propose a solution that improves performance without incurring high costs or long delays. Which of the following is the BEST course of action?

Accepted Answer

Create two separate VMs: one for the web server with 2 vCPUs and 8 GB RAM, and one for the database with 2 vCPUs and 8 GB RAM. Replace the HDD with an SSD on both VMs.. Option C is correct because separating the web server and database onto two VMs eliminates resource contention between IIS and SQL Server Express, which is the root cause of the CPU and I/O spikes. Replacing the HDD with SSDs reduces disk I/O latency from 50 ms to under 1 ms, directly addressing the performance bottleneck. This solution is cost-effective and can be implemented within two weeks using existing on-premises hardware, without requiring cloud migration or VPN setup.

Answer

Migrate the entire portal to a public cloud provider using a lift-and-shift approach, and set up a VPN connection for security.

Answer

Upgrade the existing VM by adding more RAM and using a faster HDD with a larger cache.

Answer

Implement IIS compression and enable SQL Server data compression to reduce CPU and I/O load.

Question 9

Put the steps for creating a work breakdown structure (WBS) in the correct order.

Question 10

Order the steps for creating a project schedule.

Question 11

Arrange the steps for performing procurement management.

Question 12

Match each project management knowledge area to its description.

Question 13

Match each acronym to its definition in project management.

Question 14

Match each procurement document to its purpose.

Question 15

A project manager is planning a new data center build. The organization requires high availability and low latency for critical applications. Which infrastructure component should be prioritized to meet these requirements?

Accepted Answer

Redundant network paths. Redundant network paths ensure that if one link or switch fails, traffic can immediately fail over to an alternate path, providing high availability. They also reduce latency by enabling load balancing across multiple links, which is critical for real-time applications. This directly addresses the requirement for both high availability and low latency in a data center build.

Answer

Additional storage arrays

Answer

Additional firewall appliances

Answer

Virtualization licenses