FC0-U61 Practice Test 35 — 15 Questions

Question 1

Refer to the exhibit. Which of the following components would be used to physically connect the desktop computer to the network?

Accepted Answer

Switch. A switch is the correct component because it operates at Layer 2 of the OSI model, using MAC addresses to forward frames between devices on the same local area network (LAN). The desktop computer's Ethernet NIC connects via a twisted-pair cable to a switch port, which provides the physical and data-link layer connectivity required for network communication.

Answer

Laptop

Answer

Network printer

Answer

Router

Question 2

A user reports that their computer is slow when running multiple applications simultaneously. Which component upgrade would best improve performance?

Accepted Answer

RAM. When multiple applications run simultaneously, the operating system uses RAM to store active data for quick access. Insufficient RAM forces the system to rely on the hard drive as virtual memory (paging), which is dramatically slower. Upgrading RAM reduces this paging activity, improving multitasking performance.

Answer

Video card

Answer

CPU

Answer

Hard drive

Question 3

A company wants to protect against data loss if a single hard drive fails. They have three identical drives. Which RAID configuration provides fault tolerance while maximizing storage capacity?

Accepted Answer

RAID 5. RAID 5 uses block-level striping with distributed parity, so if one of the three drives fails, the data can be rebuilt from the remaining drives plus the parity information. With three drives, RAID 5 provides fault tolerance for a single drive failure while using only one drive's worth of capacity for parity, maximizing usable storage (2/3 of total raw capacity).

Answer

RAID 0

Answer

JBOD

Answer

RAID 1

Question 4

Which TWO of the following are common types of network cables used in wired Ethernet networks?

Accepted Answer

Cat5e. Cat5e (Category 5 enhanced) is a twisted-pair copper cable standard that supports Gigabit Ethernet (1000BASE-T) up to 100 meters. It is one of the most common cable types for wired Ethernet networks because it provides sufficient bandwidth (up to 1000 Mbps) and is backward compatible with older 10/100 Mbps standards.

Answer

HDMI

Answer

Coaxial

Answer

USB

Question 5

A user cannot connect to the internet. The network uses DHCP. Based on the exhibit, what is the most likely cause?

Accepted Answer

DHCP server is not responding. The exhibit shows an APIPA address (169.254.x.x), which indicates that the client failed to obtain a DHCP lease. Since the network uses DHCP, the most likely cause is that the DHCP server is not responding, preventing the client from receiving a valid IP configuration.

Answer

IP address conflict

Answer

Incorrect subnet mask

Answer

No default gateway configured

Question 6

A small business wants to set up a local network with internet access. They have a modem from the ISP and need to share the connection among five computers. Which device should they use to connect all computers to the modem and manage traffic?

Accepted Answer

Switch. A switch is the correct device because it connects multiple computers in a local network and forwards frames based on MAC addresses, allowing all five computers to share the modem's internet connection efficiently. Unlike a hub, a switch creates dedicated collision domains per port, reducing traffic collisions and improving performance. The modem provides the WAN connection, and the switch handles LAN traffic distribution among the computers.

Answer

Router

Answer

Hub

Answer

Bridge

Question 7

A user reports that their laptop cannot connect to the office Wi-Fi. Other devices connect fine. The technician checks the wireless adapter status in Device Manager and sees a yellow exclamation mark. The technician attempts to update the driver but receives an error that the best driver is already installed. What should the technician do next?

Accepted Answer

Roll back the driver to a previous version. The yellow exclamation mark in Device Manager indicates a driver problem. Since updating the driver fails with 'best driver already installed,' the issue is likely a faulty or incompatible driver version. Rolling back the driver restores the previous working version, which is the correct next step before considering hardware replacement.

Answer

Run the Windows Network Troubleshooter

Answer

Replace the wireless adapter

Answer

Disable and re-enable the wireless adapter

Question 8

A technician is troubleshooting a computer that cannot connect to the network. Which THREE steps should the technician perform first in the troubleshooting process?

Accepted Answer

Check if the network cable is securely connected. Option B is correct because checking the physical connection is the first step in the CompTIA A+ troubleshooting methodology. A loose or damaged network cable is a common cause of connectivity failure, and verifying it eliminates the simplest issue before moving to software or configuration checks.

Answer

Reinstall the operating system

Answer

Replace the network interface card

Question 9

A server in a data center is running a critical application. The server is connected to a managed switch via two network cables for redundancy (link aggregation). Recently, the server experienced intermittent connectivity issues. The network logs show that every few hours, one of the links goes down and then comes back up within a minute. The other link remains up. The server's team reports no errors in the server logs. What is the most likely cause of this issue?

Accepted Answer

The network cable is poorly terminated. Option C is correct because a poorly terminated cable can cause intermittent physical-layer issues such as impedance mismatches or partial breaks, which lead to link flaps (link down/up events) without generating errors in the server's operating system logs. In a link aggregation group (LAG) using LACP or static aggregation, a single faulty cable will cause only that link to drop, while the other link continues to carry traffic, matching the described symptom of one link cycling every few hours.

Answer

The switch's uplink port is faulty

Answer

The switch is experiencing broadcast storms

Answer

The server's network adapter is overheating

Question 10

Which principle ensures that data is not modified by unauthorized users?

Accepted Answer

Integrity. Integrity ensures that data has not been altered or tampered with by unauthorized users. This is typically enforced through mechanisms like hashing (e.g., SHA-256) or digital signatures, which detect any modification to the original data. Without integrity controls, an attacker could change financial records or system files without detection.

Answer

Authentication

Answer

Confidentiality

Answer

Availability

Question 11

A company requires all employees to use strong passwords. Which of the following password policies best aligns with security best practices?

Accepted Answer

Passwords must be at least 8 characters and include uppercase, lowercase, numbers, and symbols.. Option B is correct because it enforces complexity requirements (uppercase, lowercase, numbers, symbols) and a minimum length of 8 characters, which aligns with NIST SP 800-63B guidelines and modern security best practices. Complex passwords resist brute-force and dictionary attacks by increasing the keyspace exponentially. Simple passwords, even if changed frequently, remain vulnerable to guessing and credential stuffing.

Answer

Passwords must be changed every 30 days but can be simple.

Answer

Passwords must be the same across all corporate accounts for consistency.

Answer

Passwords must be a minimum of 6 characters and contain only letters.

Question 12

A user wants to ensure data confidentiality. Which action is most appropriate?

Accepted Answer

Encrypt files. Encrypting files using algorithms like AES-256 ensures that even if unauthorized users gain access to the data, they cannot read it without the decryption key. This directly addresses the goal of data confidentiality by transforming plaintext into ciphertext that is unreadable without the proper key.

Answer

Change password

Answer

Share with everyone

Answer

Delete files

Question 13

Which THREE of the following are best practices for creating secure passwords?

Accepted Answer

Change password every 90 days. Option B is correct because regular password changes (e.g., every 90 days) limit the window of exposure if a password is compromised. This practice aligns with NIST SP 800-63B guidelines, which recommend periodic rotation to mitigate risks from credential theft or brute-force attacks.

Answer

Use the same password for all accounts for memorability

Answer

Use personal information like birthdate

Question 14

Which TWO of the following are types of malware?

Accepted Answer

Virus. A virus is a type of malware that attaches itself to a legitimate program or file and replicates when the host is executed, often causing damage or stealing data. It requires user interaction (e.g., opening an infected attachment) to spread, distinguishing it from other malware types.

Answer

Patch

Answer

Encryption

Answer

Firewall

Question 15

A company wants to prevent unauthorized physical access to its server room. Which control is best?

Accepted Answer

Biometric lock. A biometric lock is the best control for preventing unauthorized physical access to a server room because it authenticates individuals based on unique physiological traits (e.g., fingerprint, iris scan), directly securing the physical entry point. Unlike logical or data-level controls, it addresses the physical security domain by restricting who can enter the room, not what data they can access.

Answer

Firewall

Answer

Antivirus

Answer

Encryption

FC0-U61 Practice Test 35 — 15 Questions

Exhibit

FC0-U61 Practice Test 35 — 15 Questions

Exhibit