FC0-U61 Practice Exam 3 — 20 Questions

Question 1

Which device is used to connect multiple devices within the same network segment and forward data based on MAC addresses?

Accepted Answer

Switch. A switch operates at Layer 2 (Data Link Layer) of the OSI model and uses MAC addresses to make forwarding decisions. It maintains a MAC address table (CAM table) to learn which port each device is connected to, allowing it to forward frames only to the intended destination port, reducing collisions and improving network efficiency.

Answer

Hub

Answer

Modem

Answer

Router

Question 2

A technician needs to set up a small office network with 15 computers. The computers should be able to communicate with each other and share a single internet connection. Which device is required to enable internet sharing?

Accepted Answer

Router. A router is required to enable internet sharing because it performs Network Address Translation (NAT), which allows multiple devices on a local network to share a single public IP address provided by the ISP. The router also routes traffic between the local subnet and the internet, making it the essential device for both inter-device communication and internet access.

Answer

Modem

Answer

Hub

Answer

Switch

Question 3

A user reports that they cannot print to a network printer. Other users can print to the same printer. Which of the following should the technician check FIRST?

Accepted Answer

The printer driver on the user's computer. Since other users can print to the same network printer, the printer itself, its network connectivity, and its IP address are all functioning correctly. The issue is isolated to the single user's computer, making the printer driver on that machine the most likely cause. A corrupted, missing, or incorrect driver would prevent that specific user from sending print jobs while others remain unaffected.

Answer

The printer's IP address

Answer

The network switch port

Answer

The printer's power cable

Question 4

Which TWO of the following are benefits of virtualization in a data center?

Accepted Answer

Improved disaster recovery capabilities. Virtualization enables rapid restoration of virtual machines (VMs) from snapshots or backups, often within minutes, regardless of underlying hardware failures. This decoupling of the OS from physical hardware allows VMs to be migrated or recovered on different hosts, significantly improving recovery time objectives (RTOs) and recovery point objectives (RPOs) compared to physical server recovery.

Answer

Increased hardware reliability

Answer

Enhanced physical security

Answer

Simplified network configuration

Question 5

A company's server room is experiencing intermittent overheating. The administrator notices that the perforated floor tiles are blocked by equipment. What is the most likely consequence of this obstruction?

Accepted Answer

Reduced cooling efficiency and hot spots. Blocking perforated floor tiles restricts the flow of cold air from the raised-floor plenum into the server room. This reduces the overall cooling efficiency of the HVAC system and creates localized hot spots around the obstructed tiles, which can lead to equipment overheating and failure.

Answer

Increased electrical load on the UPS

Answer

Increased humidity levels

Answer

Reduced battery backup time

Question 6

A technician is setting up a new computer on a network. The computer receives an IP address of 169.254.1.5. Which of the following is the most likely issue?

Accepted Answer

The DHCP server is unavailable. The IP address 169.254.1.5 falls within the Automatic Private IP Addressing (APIPA) range (169.254.0.0/16), which Windows automatically assigns when a DHCP client fails to receive an IP lease from a DHCP server. This indicates that the DHCP server is either unreachable or not responding, making D the correct answer.

Answer

The network cable is faulty

Answer

The DNS server is unreachable

Answer

The gateway is misconfigured

Question 7

Refer to the exhibit. This JSON policy is associated with an IAM user. Which of the following actions is the user permitted to perform?

Accepted Answer

Download files from example-bucket. The JSON policy grants the s3:GetObject action on the arn:aws:s3:::example-bucket/* resource, which allows the user to retrieve (download) objects from the specified S3 bucket. The Effect is set to 'Allow', so the policy explicitly permits this action. No other actions are listed in the Statement, so only downloads are permitted.

Answer

Upload files to example-bucket

Answer

Delete files from example-bucket

Answer

List the contents of example-bucket

Question 8

A small business has 20 employees using a mix of wired and wireless devices. The network uses a single router with built-in 4-port switch and Wi-Fi. Recently, employees have reported intermittent connectivity drops, especially during peak hours. The technician notices that the router's CPU usage is consistently at 90% or higher. The business cannot afford to replace the router immediately. Which of the following actions would BEST improve the situation without purchasing new hardware?

Accepted Answer

Configure VLANs to separate wired and wireless traffic. Configuring VLANs separates wired and wireless traffic into distinct broadcast domains, reducing the amount of broadcast traffic and collisions that the router's CPU must process. This lowers CPU overhead, which directly addresses the 90% CPU usage causing intermittent drops, without requiring new hardware.

Answer

Disable Quality of Service (QoS) settings

Answer

Disable the Wi-Fi network and require all devices to connect via Ethernet

Answer

Assign static IP addresses to all devices

Question 9

Match each network protocol to its well-known port number.

Question 10

Match each network type to its description.

Question 11

A company wants to deploy a custom application to 500 employees. The IT team needs to ensure each workstation has the same version and configuration. Which deployment method should be used?

Accepted Answer

Use Group Policy to publish the application to all workstations.. Group Policy (GPO) allows centralized deployment of software via Active Directory, ensuring all workstations receive the same version and configuration automatically during startup or user logon. This method uses the Windows Installer service (MSI) and can assign or publish applications, enforcing consistency without user intervention. It is the only option that guarantees uniform deployment across 500 machines with minimal administrative overhead.

Answer

Place the installer on a network share and instruct users to run it.

Answer

Distribute USB drives with the installer to each employee.

Answer

Email the installer to all employees.

Question 12

A user reports that their laptop cannot connect to the corporate Wi-Fi. Other devices in the same area work fine. The network technician checks the laptop and sees that the wireless adapter is enabled and shows available networks, but the connection attempt to the corporate SSID fails with an authentication error. Which of the following is the MOST likely cause?

Accepted Answer

The pre-shared key is incorrect. The authentication error specifically indicates that the laptop failed to verify its credentials with the access point. Since the wireless adapter is enabled and the SSID is visible, the most common cause is an incorrect pre-shared key (PSK), which prevents the 4-way handshake in WPA2/WPA3 from completing successfully.

Answer

The MAC address is filtered on the access point

Answer

The DHCP lease has expired

Answer

The wireless adapter is disabled in Device Manager

Question 13

A small office uses a single ISP-provided modem/router combination device. Employees need to connect their desktops and printers to the network. Which of the following devices would allow them to connect multiple wired devices and also extend wireless coverage?

Accepted Answer

Wireless access point. A wireless access point (WAP) connects to the ISP modem/router via Ethernet and bridges the wired LAN to a wireless network, allowing both wired and wireless clients to communicate. In this scenario, the WAP adds additional Ethernet ports for desktops and printers while also extending Wi-Fi coverage beyond the built-in router's range.

Answer

Modem

Answer

Switch

Answer

Hub

Question 14

A user reports that a spreadsheet application crashes every time they try to open a specific file. The file was created in a newer version of the software. What is the most likely cause?

Accepted Answer

The file was saved in a format incompatible with the installed version.. Option B is correct because the most likely cause of a crash when opening a file created in a newer version of the software is a format incompatibility. Newer versions often use updated file formats (e.g., .xlsx vs. .xls in Excel) that older versions cannot parse correctly, leading to application instability or crashes. This is a common scenario in backward compatibility issues, where the installed software lacks the necessary codecs or schema to interpret the file's structure.

Answer

The computer does not have enough RAM.

Answer

The file is corrupted.

Answer

The user does not have permission to access the file.

Question 15

Refer to the exhibit. A security auditor reviews this application configuration. What is the most significant security concern?

Accepted Answer

The database password is stored in plaintext.. Option C is correct because storing a database password in plaintext within an application configuration file is a critical security vulnerability. If an attacker gains access to the file, they can immediately read the credentials and connect to the database, potentially compromising all stored data. This violates fundamental security principles such as least privilege and defense in depth, and it is explicitly warned against in secure coding guidelines like OWASP's Top 10 (A07:2021 – Identification and Authentication Failures).

Answer

The server name is hardcoded.

Answer

The log level is set to Debug.

Answer

The database name is SalesDB.

Question 16

A small business needs to share documents among employees and allow real-time collaboration. Which type of application is best suited?

Accepted Answer

Implementing a cloud-based productivity suite.. A cloud-based productivity suite (e.g., Microsoft 365, Google Workspace) stores documents on remote servers and provides real-time co-authoring, version history, and simultaneous editing via web or client applications. This directly meets the requirement for sharing documents and enabling real-time collaboration without the overhead of manual file distribution.

Answer

Using email to send attachments back and forth.

Answer

Using a web browser to access public documents.

Answer

Installing a local office suite on each workstation.

Question 17

A user wants to create a presentation with slides, animations, and speaker notes. Which application type should they use?

Accepted Answer

Presentation software.. Presentation software, such as Microsoft PowerPoint or Google Slides, is specifically designed to create slide-based presentations with multimedia elements like animations, transitions, and speaker notes. The speaker notes feature allows the presenter to see private notes below each slide while the audience views only the slides, which is a core function of this application type.

Answer

Word processing software.

Answer

Database software.

Answer

Spreadsheet software.

Question 18

An employee receives an email with an attachment that claims to be an invoice. The employee is unsure of the sender. What is the best practice?

Accepted Answer

Delete the email and report it to the IT department.. Option A is correct because the safest response to an unsolicited email with an attachment from an unknown sender is to delete it and report it to the IT department. This follows the principle of least privilege and zero-trust security, as opening or interacting with the attachment could trigger a malware payload, such as a macro virus or ransomware, that exploits vulnerabilities in the email client or operating system.

Answer

Forward the email to a personal email for later review.

Answer

Reply to the sender requesting confirmation.

Answer

Open the attachment to verify its contents.

Question 19

Refer to the exhibit. A user cannot connect to a network share on a remote server. Based on the firewall rule, what is the most likely cause?

Accepted Answer

The firewall is blocking outbound SMB traffic.. The exhibit shows a firewall rule that blocks outbound traffic on port 445, which is used by SMB (Server Message Block) for file sharing. Since the user is trying to connect to a network share on a remote server, the outbound SMB traffic is being blocked, preventing the connection. This is the most likely cause because SMB relies on port 445 for direct TCP communication, and blocking outbound traffic on this port stops the client from initiating the connection.

Answer

The firewall is blocking inbound connections.

Answer

The firewall is blocking all network traffic.

Answer

The firewall is blocking DNS resolution.

Question 20

A junior developer is tasked with fixing a bug where a variable is unexpectedly undefined. The developer suspects the variable is not within scope. Which programming concept describes where a variable can be accessed?

Accepted Answer

Scope. Scope is the programming concept that defines the region of code where a variable is accessible. If a variable is unexpectedly undefined, it is often because it was declared outside the current block or function, making it out of scope. In JavaScript, for example, variables declared with `let` or `const` inside a block are not accessible outside that block.

Answer

Loop

Answer

Data type

Answer

Function