FC0-U71 Practice Test 4 — 25 Questions

Question 1

A system administrator needs to automatically assign IP addresses to devices on the network. Which protocol should be configured on the server?

Accepted Answer

DHCP. The Dynamic Host Configuration Protocol (DHCP) is the correct protocol because it is specifically designed to automatically assign IP addresses and other network configuration parameters (such as subnet mask, default gateway, and DNS servers) to devices on a network. A DHCP server maintains a pool of available addresses and leases them to clients, eliminating the need for manual static IP configuration.

Answer

DNS

Answer

ICMP

Answer

ARP

Question 2

A small business needs to share files among employees within the same building. Which network topology is most efficient for this scenario?

Accepted Answer

Star. The star topology is most efficient for this scenario because all employee workstations connect to a central switch, which provides dedicated bandwidth per connection and simplifies troubleshooting. In a small office, the star topology allows easy addition or removal of devices without disrupting the network, and the central switch can manage traffic efficiently using MAC address tables.

Answer

Ring

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Bus

Answer

Mesh

Question 3

A web developer wants to identify why a web page is loading slowly. Which built-in browser tool is most appropriate to analyze network requests?

Accepted Answer

Developer Tools. Developer Tools (F12) include a Network tab that captures all HTTP/HTTPS requests made by the page, showing timing details (DNS lookup, TCP handshake, TLS negotiation, time to first byte, content download) and response sizes. This allows the developer to pinpoint slow resources, such as large images, unoptimized scripts, or server delays, making it the correct tool for analyzing network performance.

Answer

Password manager

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Download manager

Answer

Bookmark manager

Question 4

A technician is diagnosing performance issues in a wireless network. Users report intermittent slowdowns. Which of the following is the MOST likely cause?

Accepted Answer

Interference from neighboring networks. Intermittent slowdowns in a wireless network are most commonly caused by co-channel or adjacent-channel interference from neighboring networks. Wi-Fi operates on shared, unlicensed spectrum (2.4 GHz and 5 GHz), and overlapping channels or high utilization from nearby access points force stations to wait for clear channel access, causing latency spikes and throughput drops. WPA2 encryption overhead is negligible for modern hardware, and weak signal or incorrect channel width would typically cause consistent, not intermittent, issues.

Answer

WPA2 encryption overhead

Answer

Weak signal from the access point

Answer

Incorrect channel width setting

Question 5

A developer is writing a program that stores a collection of unique student IDs. The program needs to quickly look up a student by ID and does not require the IDs to be stored in any particular order. Which data structure is most appropriate for this task?

Accepted Answer

Dictionary. A dictionary (hash map) stores key-value pairs and provides average O(1) lookup by key, which is ideal for quickly retrieving a student record by unique ID. Since the IDs are unique and order does not matter, a dictionary's key uniqueness constraint and fast lookup make it the best fit. Arrays and other sequential structures would require O(n) search unless indexed by a contiguous integer range.

Answer

Queue

Answer

Array

Answer

Stack

Question 6

A user is trying to access a website but receives a 'DNS server not responding' error. Which of the following is the MOST likely cause?

Accepted Answer

DNS server is unreachable. The 'DNS server not responding' error indicates that the client cannot reach the DNS server to resolve the domain name into an IP address. This is most commonly caused by the DNS server being unreachable due to network connectivity issues, server downtime, or incorrect DNS server configuration. Without DNS resolution, the browser cannot translate the website's URL into an IP address, even if the network and web server are functional.

Answer

DHCP server is down

Answer

Firewall is blocking the website

Answer

Modem is disconnected

Question 7

Which programming concept allows a program to make decisions based on conditions, such as checking if a user is logged in?

Accepted Answer

Conditional logic. Conditional logic (e.g., if/else statements) evaluates a Boolean expression and executes different code paths based on whether the condition is true or false. In the example, checking if a user is logged in requires a decision point: if the user is authenticated, grant access; otherwise, redirect to login. This is the fundamental mechanism for decision-making in programming, distinct from iteration, modularization, or data storage.

Answer

Loops

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Functions

Answer

Variables

Question 8

An attacker gains physical access to a building by following an employee through a secured door without using a badge. This is an example of which social engineering technique?

Accepted Answer

Tailgating. Tailgating (also called piggybacking) is the social engineering technique where an attacker follows an authorized employee through a secured door without using their own credentials. It exploits politeness or inattention rather than technical vulnerabilities, and it is a physical social engineering attack.

Answer

Phishing

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Baiting

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Pretexting

Question 9

Refer to the exhibit. A technician notices high CPU usage from a process called 'svchost.exe'. What is the most appropriate action?

Accepted Answer

Scan for malware. Svchost.exe is a legitimate Windows process that hosts services. High CPU usage could indicate a malfunctioning service or malware disguised as svchost. Scanning for malware is the safest first step. Ending the process could cause system instability; updating Windows might fix service issues but not malware; virtual memory is not relevant.

Answer

End the process immediately

Answer

Increase virtual memory

Answer

Update Windows

Question 10

A web application is not responding to user input. The developer checks the code and finds an infinite loop. Which change will fix the infinite loop?

Accepted Answer

Add a counter variable that increments and check it in the condition. An infinite loop occurs when the loop's termination condition is never met. By adding a counter variable that increments with each iteration and checking it in the condition, the loop will eventually exit when the counter reaches a specified limit, thus breaking the infinite loop.

Answer

Remove the loop body

Answer

Add a break statement

Answer

Change from a for loop to a while loop

Question 11

A small business uses a single external IP address from their ISP and has a network of 10 computers. They want to host a web server that must be accessible from the internet, but they also need to protect their internal network. They have a firewall/router that supports port forwarding. Which configuration should they implement?

Accepted Answer

Configure port forwarding on the router to direct HTTP (port 80) and HTTPS (port 443) traffic to the web server's internal IP address. Port forwarding allows the firewall/router to accept incoming HTTP (port 80) and HTTPS (port 443) traffic on the single public IP address and forward it to the web server's internal private IP address. This exposes only the necessary ports to the internet while keeping the web server behind the firewall, protecting the internal network from direct external access.

Answer

Connect the web server directly to the ISP modem, bypassing the firewall

Answer

Place the web server in the DMZ of the firewall and allow all inbound traffic to the server's IP

Answer

Assign a public IP address to the web server and connect it to the same switch as the other computers

Question 12

A user wants to prevent unauthorized access to their laptop if stolen. Which is the best method?

Accepted Answer

Enable BitLocker. BitLocker is a full-disk encryption feature built into Windows that encrypts the entire drive, making data inaccessible without the decryption key. If the laptop is stolen, the thief cannot read any files even if they remove the hard drive and connect it to another system. This directly prevents unauthorized access to data, unlike other options that only protect against network or software threats.

Answer

Antivirus

Answer

Use a strong password

Answer

Firewall

Question 13

Which of the following file extensions indicates a document created with Microsoft Word?

Accepted Answer

.docx. The .docx extension is the default file format for Microsoft Word documents since Office 2007, based on the Office Open XML (OOXML) standard. It replaced the older binary .doc format and is used for word processing documents containing text, images, and formatting. This is a straightforward file-association question testing familiarity with common productivity file types.

Answer

.xlsx

Answer

.pptx

Answer

.pdf

Question 14

Refer to the exhibit. What does this event log entry indicate?

Accepted Answer

A power outage or unexpected shutdown occurred. The event log entry indicates a system shutdown that was not expected or planned, as shown by the 'unexpected' keyword and the event ID 41 in the System log, which corresponds to the Kernel-Power source. This typically occurs when the system loses power or crashes without a clean shutdown process, such as during a power outage or hardware failure.

Answer

A virus infected the system

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A software update was installed

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A scheduled restart took place

Question 15

A company's IT department is deploying a new payroll system. Before the system goes live, a group of employees from the accounting department test the system to ensure it meets their requirements and is usable. This type of testing is known as:

Accepted Answer

User acceptance testing. User acceptance testing (UAT) is performed by end users or business stakeholders to confirm that the system meets their real-world requirements and is usable before go-live. In this scenario, accounting employees testing the payroll system against their own needs is the textbook definition of UAT. It is the final validation step before production deployment.

Answer

System testing

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Unit testing

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Integration testing

Question 16

A product manager creates a list of user stories for a new feature. The development team estimates effort for each story and selects a set to complete in a two-week iteration. Daily standup meetings are held to discuss progress. At the end of the iteration, the team demonstrates working software to stakeholders. Which development framework is being used?

Accepted Answer

Scrum. The described practices — user stories, effort estimation, time-boxed two-week iterations (sprints), daily standups, and end-of-iteration demos — are the defining ceremonies of Scrum. Scrum is an Agile framework built around short, repeatable cycles that deliver working software incrementally. The explicit mention of a two-week iteration and daily standup maps directly to the Sprint and Daily Scrum events.

Answer

Waterfall

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V-Model

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Kanban

Question 17

A developer writes the following pseudocode: for i = 1 to 5, sum = sum + i. What does this code do?

Accepted Answer

It sums the numbers from 1 to 5. The pseudocode initializes a loop that iterates with i taking values 1, 2, 3, 4, and 5. In each iteration, the current value of i is added to the variable sum. After the loop completes, sum holds the total of 1+2+3+4+5, which is 15. This is a standard accumulator pattern used in programming to compute a running total.

Answer

It adds 5 to the sum

Answer

It multiplies numbers from 1 to 5

Answer

It prints the numbers from 1 to 5

Question 18

An administrator reviews the following access control policy:

{
  "Rule": {
    "Effect": "Deny",
    "Action": "delete",
    "Resource": "file-server",
    "Condition": {
      "IpAddress": {
        "SourceIp": "192.0.2.0/24"
      }
    }
  }
}

What does it do?

Accepted Answer

It denies delete access to the file server for requests from the 192.0.2.0/24 IP range. The policy explicitly denies delete actions for requests originating from the 192.0.2.0/24 IP range. This is achieved by using a Deny effect in the access control rule's Condition block with the SourceIp condition key. The policy does not affect other actions or IP ranges, so only delete access is denied for that specific CIDR block.

Answer

It allows delete access to the file server for all IPs

Answer

It allows read access to the file server from the IP range

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It denies all actions to the file server

Question 19

A developer writes a set of instructions to sort an array of numbers in ascending order. The instructions include steps like 'compare first two numbers, swap if out of order, move to next pair, repeat until no swaps are needed.' This step-by-step procedure is known as a(n):

Accepted Answer

Algorithm. An algorithm is a finite, ordered set of steps that solves a specific problem — here, sorting an array via repeated comparisons and swaps (a bubble sort). The description explicitly gives a step-by-step procedure with a termination condition ('repeat until no swaps are needed'), which is the definition of an algorithm. It is the conceptual procedure, independent of any specific programming language.

Answer

Pseudocode

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Flowchart

Answer

Data structure

Question 20

A database designer wants to avoid duplicate data across tables and ensure each table stores information about a single entity. Which process should the designer apply?

Accepted Answer

Normalization. Normalization is the process of organizing data in a database to reduce redundancy and dependency by dividing large tables into smaller, related tables and defining relationships between them. This ensures each table stores information about a single entity and avoids duplicate data across tables, aligning with the designer's goal.

Answer

Indexing

Answer

Transaction isolation

Answer

Backup and recovery