FC0-U71 Practice Test 26 — 15 Questions

Question 1

A network technician is explaining to a client why a file transfer over the network is slower than expected. Which factor MOST likely affects transfer speed?

Accepted Answer

Bandwidth. Bandwidth is the maximum rate at which data can be transferred over a network path, typically measured in bits per second (bps). A lower bandwidth directly limits the throughput of a file transfer, causing it to take longer regardless of other factors. This is the most fundamental constraint on transfer speed, as it defines the pipe size through which all data must flow.

Answer

File compression

Answer

File format

Answer

Encryption

Question 2

A user receives an error message 'Insufficient memory' when trying to open a large file. Which of the following is the MOST likely cause?

Accepted Answer

The system RAM is insufficient. The 'Insufficient memory' error specifically indicates that the system's RAM (Random Access Memory) is unable to allocate enough space to load the large file into active memory. When a file is opened, it is read from the hard drive into RAM for processing; if the file size exceeds available RAM, the operating system cannot complete the operation, triggering this error.

Answer

The CPU is overheating

Answer

The hard drive is full

Answer

The graphics card is outdated

Question 3

A user is trying to print but receives the error shown in the exhibit. Which of the following is the MOST likely cause?

Accepted Answer

Printer is powered off or disconnected from the network. The error shown in the exhibit (e.g., 'Printer not responding' or 'Offline') typically indicates the printer is powered off or disconnected from the network. When a printer is unreachable on the TCP/IP network, the print spooler cannot establish a connection to the printer's IP address or hostname, resulting in this error. This is the most common cause before investigating software or consumable issues.

Answer

Corrupt printer driver

Answer

Paper jam in the printer

Answer

Low toner level

Question 4

An employee is tailgated into a secure office building by someone without a badge. Which type of security threat does this represent?

Accepted Answer

Tailgating. Tailgating is the correct answer because it specifically describes an unauthorized person following an authorized employee through a secure door without presenting credentials. This is a physical security threat, not a social engineering attack conducted remotely. The scenario matches the definition exactly.

Answer

Phishing

Answer

Baiting

Answer

Pretexting

Question 5

A small business needs to manage customer contacts, sales leads, and communication history. Which THREE types of software could be used? (Choose THREE.)

Accepted Answer

Customer relationship management (CRM) software.. CRM software (C) is purpose-built to manage customer contacts, sales leads, and communication history, tracking interactions and pipelines in one system. Database software (D) can store and relate customer, lead, and interaction records, supporting queries and reporting for a small business. Spreadsheet software (E) can serve as a lightweight contact/lead tracker with columns for names, statuses, and communication notes, and is commonly used by small businesses without a dedicated CRM. Accounting software (A) focuses on financial transactions, ledgers, and invoicing rather than contact or lead management. Word processing software (B) only creates text documents and lacks structured data management for contacts, leads, or communication history.

Answer

Accounting software.

Answer

Word processing software.

Question 6

A small business uses a single Linux server to host a custom inventory management application written in Python. The application reads from a CSV file on the server to display current stock levels. Recently, users have reported that the inventory numbers are incorrect and sometimes the application crashes with a 'Permission denied' error when trying to save updates. The server has two user accounts: 'admin' (with sudo privileges) and 'app_user' (a standard user under which the application runs). The CSV file is located at /var/data/inventory.csv and currently has permissions -rw-rw---- and owner root:root. The application code uses the open() function to read and write the file. Which of the following actions should be taken to resolve the issue?

Accepted Answer

Change the group ownership to a group that includes 'app_user' and ensure the file has group write permission.. The application runs as 'app_user', which needs to write to /var/data/inventory.csv. The file is owned by root:root with permissions -rw-rw----, meaning only root and the root group can write. Changing the group ownership to a group that includes 'app_user' and granting group write permission (e.g., chown root:app_group /var/data/inventory.csv; chmod 664 /var/data/inventory.csv) allows the application to write without elevating privileges or exposing the file to all users.

Answer

Modify the application to run as 'admin' using sudo.

Answer

Set the file permissions to 644 so all users can read the file.

Answer

Change the file owner to 'app_user' and set permissions to 755.

Question 7

Which THREE of the following are characteristics of a solid-state drive (SSD) compared to a traditional hard disk drive (HDD)?

Accepted Answer

Faster access times. SSDs use NAND flash memory with no moving parts, allowing near-instantaneous data access (typically 0.1 ms or less) compared to HDDs that require mechanical arm movement and platter rotation (5–15 ms). This eliminates rotational latency and seek time, making access times significantly faster.

Answer

Higher storage capacity typically

Answer

More noise

Question 8

Which TWO of the following are examples of social engineering attacks?

Accepted Answer

Shoulder surfing. Shoulder surfing (B) is a social engineering attack because it relies on directly observing a person—looking over their shoulder or using nearby cameras—to steal credentials, PINs, or other sensitive information through human interaction rather than technical exploitation. Phishing (E) is also social engineering since it manipulates a victim via deceptive emails, messages, or websites into revealing credentials or clicking malicious links, exploiting human trust rather than system vulnerabilities. By contrast, DDoS (A) is a network availability attack that floods a target with traffic, brute force (C) is a computational attack that systematically tries password or key combinations, and man-in-the-middle (D) is a network interception attack that relays or alters communications—none of these depend on psychologically manipulating a person, so they are not social engineering.

Answer

DDoS

Answer

Brute force

Answer

Man-in-the-middle

Question 9

A user wants to upgrade their computer's RAM for better performance. Which of the following are characteristics of DDR4 and DDR5 RAM? (Select THREE).

Accepted Answer

DDR5 operates at a lower voltage than DDR4. Option A is correct because DDR5 runs at a lower nominal voltage (1.1 V) than DDR4 (1.2 V), reducing power consumption. Option B is correct because installing memory in matched pairs across two channels (dual channel) increases the effective memory bus width and improves bandwidth and overall performance. Option D is correct because DDR5 delivers higher data transfer rates than DDR4, with DDR5 starting around 4800 MT/s versus DDR4's typical 2133–3200 MT/s. Option C is incorrect because DDR4 and DDR5 have different keying/notch positions and are not physically interchangeable. Option E is incorrect because DDR4 is not backward compatible with DDR3 slots; the modules are keyed differently and use incompatible signaling and voltages.

Answer

DDR4 and DDR5 use the same physical slot

Answer

DDR4 is backward compatible with DDR3 slots

Question 10

A technician is troubleshooting a computer that does not start. They suspect the BIOS may be corrupted. Which type of software is the BIOS?

Accepted Answer

Firmware. The BIOS (Basic Input/Output System) is firmware — low-level software stored on a chip on the motherboard that initializes hardware during boot and provides runtime services for the operating system. It is not an operating system, application, or device driver, though it is often confused with them due to its role in starting the system.

Answer

Operating system

Answer

Application software

Answer

Device driver

Question 11

During debugging, a developer sets a breakpoint and steps through the code line by line. Which debugging tool feature is being used to execute one line of code at a time?

Accepted Answer

Step execution. Step execution (or stepping) is the debugging feature that executes one line of code at a time, allowing the developer to observe the program's state after each statement. This is typically done using 'Step Over', 'Step Into', or 'Step Out' commands in a debugger. The question describes exactly this line-by-line execution, which is step execution.

Answer

Breakpoint

Answer

Variable inspection

Answer

Logging

Question 12

Which of the following is an example of a strong password?

Accepted Answer

Cr@zy8#s. (Cr@zy8#s) is correct because it meets all strong password criteria: it is at least 8 characters long, includes uppercase and lowercase letters, a digit, and special characters (@ and #). This complexity makes it resistant to brute-force attacks and dictionary attacks, as it increases the entropy and does not contain common words or sequential patterns.

Answer

123456

Answer

abc123

Answer

password

Question 13

A developer is planning a new project that has very clear and fixed requirements. The project must be completed in a linear fashion with each phase finished before moving to the next. Which development methodology should be used?

Accepted Answer

Waterfall. The Waterfall methodology is correct because it follows a linear, sequential approach where each phase (e.g., requirements, design, implementation, testing) must be completed before the next begins. This aligns perfectly with the project's very clear and fixed requirements, as Waterfall assumes that all requirements are known upfront and changes are minimized.

Answer

Spiral

Answer

Scrum

Answer

Agile

Question 14

A software team uses version control and one developer commits a change that breaks the build. Which practice should be enforced to prevent this in the future?

Accepted Answer

Set up a pre-commit hook to run unit tests. A pre-commit hook runs automated unit tests on the developer's local machine before the commit is accepted. If the tests fail, the commit is blocked, preventing broken code from entering the shared repository and breaking the build. This enforces immediate validation at the point of commit, catching issues before they affect other team members.

Answer

Schedule daily automated builds

Answer

Require peer review for all commits

Answer

Implement a code freeze during releases

Question 15

Which of the following is the result of the binary operation 1101 AND 1011?

Accepted Answer

1001. The AND operation compares each bit position and outputs 1 only when both input bits are 1. Aligning 1101 and 1011: bit1 1&1=1, bit2 1&0=0, bit3 0&1=0, bit4 1&1=1, giving 1001. This matches option D.

Answer

1111

Answer

1011

Answer

1101