FC0-U71 Practice Test 42 — 15 Questions

Question 1

Refer to the exhibit. A technician runs ipconfig /all on a user's computer. The user can access the internet but cannot browse to any websites by domain name. What is the most likely cause?

Accepted Answer

The DNS server address is incorrect or not functioning for external lookups.. The user can access the internet (IP connectivity works) but cannot browse by domain name, which indicates that DNS resolution is failing. The `ipconfig /all` output would show a DNS server address; if that address is incorrect or the DNS server cannot perform external lookups, the computer cannot translate domain names to IP addresses, even though other network functions (like DHCP and IP routing) are working correctly.

Answer

DHCP is disabled on the computer.

Answer

The IP address is a private address and cannot access the internet.

Answer

The subnet mask should be 255.255.0.0.

Question 2

Which THREE of the following are common methods to acquire software? (Select THREE).

Accepted Answer

Purchase from a retail store. Purchasing software from a retail store is a traditional method of acquiring software, where the user buys a physical copy (e.g., on a DVD or CD-ROM) containing the installation files and a license key. This method provides a tangible medium and often includes a license agreement that grants the user the right to install and use the software on a specified number of devices. It is a common acquisition method, especially for commercial off-the-shelf (COTS) software.

Answer

Install from a USB drive

Answer

Use software-as-a-service (SaaS)

Question 3

A technician notices that a switch interface is showing many CRC errors. What is the most likely cause?

Accepted Answer

Faulty cable. CRC errors indicate that frames received on the interface have failed the cyclic redundancy check, meaning the data has been corrupted during transmission. A faulty cable is the most common cause of such corruption because it can introduce electrical interference, signal degradation, or physical breaks that alter the bits in the frame. While duplex mismatch can cause CRC errors in some cases, a faulty cable is the primary suspect when CRC errors are present.

Answer

Duplex mismatch

Answer

Incorrect IP configuration

Answer

MAC address flooding

Question 4

A large retail chain operates a data warehouse that combines sales data from multiple source databases. The warehouse is designed using a highly normalized snowflake schema. Analysts frequently run complex queries that aggregate sales across many dimensions (e.g., time, product, store). Recently, the queries have become very slow, often taking hours to complete. The data warehouse team suspects the normalization is causing many joins, degrading performance. The business users need faster reporting. The team must decide on a course of action that balances query performance with maintainability. Which technique is most likely to improve reporting speed without significantly compromising data integrity?

Accepted Answer

Denormalize some tables by merging fact and dimension tables. Denormalizing some tables by merging fact and dimension tables reduces the number of joins required for complex analytical queries, directly addressing the performance bottleneck caused by the highly normalized snowflake schema. This technique improves query speed by storing redundant data in a star-like schema, which is a common optimization for data warehouses where read performance is prioritized over write efficiency, while still maintaining data integrity through careful design and ETL processes.

Answer

Increase the server's CPU and memory resources

Answer

Replace the relational warehouse with a NoSQL document store

Answer

Add more indexes on all foreign key columns

Question 5

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 6

Which of the following best describes the 'Confidentiality' component of the CIA triad?

Accepted Answer

Data is accessible only to authorized users. Confidentiality ensures that data is not accessed by unauthorized individuals. Integrity protects data from unauthorized modification, and availability ensures data is accessible when needed.

Answer

Systems are operational when needed

Answer

Data is encrypted at rest

Answer

Data is not modified without authorization

Question 7

A user reports that their computer has been displaying unwanted pop-up advertisements frequently. Which type of malware is most likely responsible?

Accepted Answer

Adware. Adware displays unwanted advertisements, often in pop-ups or banners.

Answer

Ransomware

Answer

Spyware

Answer

Rootkit

Question 8

An organization requires employees to use a password and a one-time code sent to their mobile phone when logging into the network. Which security principle is being implemented?

Accepted Answer

Multi-factor authentication. Multi-factor authentication (MFA) requires two or more factors: something you know (password) and something you have (phone).

Answer

Least privilege

Answer

Biometrics

Answer

Single sign-on

Question 9

A user wants to store a file with lossless compression. Which TWO of the following file formats support lossless compression? (Select TWO.)

Accepted Answer

PNG. PNG and ZIP are lossless; JPEG is lossy; MP3 is lossy; BMP is uncompressed.

Answer

MP3

Answer

BMP

Answer

JPEG

Question 10

An attacker gains physical access to a secure area by following an authorized employee through a door that requires a badge. This social engineering technique is known as:

Accepted Answer

Tailgating. Tailgating (or piggybacking) is when an unauthorized person follows an authorized person into a restricted area without proper authentication.

Answer

Pretexting

Answer

Phishing

Answer

Baiting

Question 11

A company is implementing physical security measures. Which two of the following are examples of physical security controls? (Select TWO.)

Accepted Answer

Locking screens when leaving the desk. Locking screens prevent unauthorized viewing, and shredding documents destroys sensitive paper data. Both are physical security.

Answer

Enforcing strong passwords

Answer

Using a firewall

Answer

Installing antivirus software

Question 12

A company's backup strategy requires three copies of data, on two different media types, with one copy offsite. Which backup rule does this follow?

Accepted Answer

3-2-1 rule. The 3-2-1 backup rule: three copies, two different media types, one offsite.

Answer

Incremental backup

Answer

Differential backup

Answer

Full backup

Question 13

Which TWO of the following are examples of physical security measures? (Select TWO)

Accepted Answer

Locking the computer screen when leaving the desk. Locking screens when away (lock screen) and shredding sensitive documents are physical security measures. Firewalls and encryption are logical/technical controls; passwords are authentication.

Answer

Requiring strong passwords

Answer

Using encryption for sensitive files

Answer

Installing a network firewall

Question 14

Which THREE of the following are characteristics of a strong password? (Select THREE)

Accepted Answer

At least 12 characters in length. A strong password is at least 12 characters long, contains a mix of uppercase, lowercase, numbers, and symbols, and is not reused across accounts. Using personal information or common words makes passwords weak.

Answer

Includes the user's birth date

Answer

Is reused across multiple accounts

Question 15

Which of the following is a characteristic of a worm compared to a virus?

Accepted Answer

A worm can self-replicate without user intervention. A worm can spread automatically without needing to attach to a host file or require user action, while a virus typically requires a host file and user execution to spread.

Answer

A worm is always disguised as legitimate software

Answer

A worm is a type of ransomware

Answer

A worm requires a host file to replicate