FC0-U61 Infrastructure Practice Test 7 — 15 Questions

Question 1

Refer to the exhibit. A technician runs two ping commands. Based on the output, which of the following is the MOST likely cause?

Accepted Answer

The network connection is down. Option B is correct. The ping to 8.8.8.8 (IP) fails, but the second failure to google.com says 'Temporary failure in name resolution', indicating DNS is not resolving. However, the first ping to an IP fails completely, suggesting no connectivity at all. But the key is that the DNS resolution failure is additional. Actually, the exhibit shows both pings fail. The ping to 8.8.8.8 fails with 100% loss, meaning no IP connectivity. The DNS error is secondary. The most likely cause is that the network is down entirely. Option A is wrong because DNS is not the primary issue since IP ping also fails. Option C is wrong because firewall would cause different errors. Option D is wrong because router is needed for routing.

Answer

The default gateway is unreachable

Answer

DNS server is misconfigured

Answer

A firewall is blocking ICMP traffic

Question 2

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 3

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 4

A company has two departments on separate floors and wants to connect them into a single local area network (LAN). Which device should be used to interconnect the switches on each floor?

Accepted Answer

Switch. A switch is the correct device because it operates at Layer 2 (Data Link layer) and can forward frames based on MAC addresses, allowing multiple switches to be interconnected to extend a single broadcast domain and form a larger LAN. Connecting switches on different floors via Ethernet cables or fiber uplinks creates a unified local area network without requiring routing or network-layer addressing.

Answer

Router

Answer

Modem

Answer

Hub

Question 5

A technician is troubleshooting a desktop that does not power on. The power supply fan spins, but there is no display and no beep codes. Which component should the technician check first?

Accepted Answer

RAM. When the power supply fan spins but there is no display and no beep codes, the system is likely failing the Power-On Self-Test (POST) before it can initialize the video subsystem. RAM is the most common cause of a 'no POST' condition because if the memory is faulty, loose, or incompatible, the motherboard cannot complete the memory initialization step, halting the boot process silently without beeps or display.

Answer

Motherboard

Answer

CPU

Answer

Power supply

Question 6

A user wants to securely access company resources from a remote location over the internet. Which technology should be used?

Accepted Answer

VPN. A VPN (Virtual Private Network) creates an encrypted tunnel between the user's device and the company's network over the internet, ensuring confidentiality and integrity of data. This allows remote users to securely access internal resources as if they were directly connected to the corporate LAN. Technologies like IPsec or TLS are commonly used to establish this secure connection.

Answer

HTTP

Answer

SSH

Answer

FTP

Question 7

A small office needs a centralized storage solution that all employees can access over the network to share files. Which type of storage should they implement?

Accepted Answer

NAS. A NAS (Network Attached Storage) is a dedicated file-level storage device connected to a network, allowing multiple users to access and share files over standard protocols like SMB/CIFS (Windows) or NFS (Linux/Unix). This makes it the ideal centralized solution for a small office needing shared network file access without requiring a dedicated server.

Answer

JBOD

Answer

SAN

Answer

DAS

Question 8

A user's laptop battery no longer holds a charge and the laptop only works when plugged in. Which component should be replaced?

Accepted Answer

Battery. Option D is correct because the battery is the component that stores charge. The hard drive (A), RAM (B), and power adapter (C) do not affect battery charging.

Answer

RAM

Answer

Hard drive

Answer

Power adapter

Question 9

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 10

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 11

A network printer should always receive the same IP address to ensure reliable access. Which configuration method guarantees this?

Accepted Answer

Static IP address. A static IP address is manually configured on the printer itself, ensuring it never changes regardless of network conditions or DHCP server availability. This guarantees the printer always receives the same IP address because the assignment is hard-coded and not subject to lease expiration or server failures.

Answer

DHCP reservation

Answer

Dynamic IP address

Answer

APIPA

Question 12

Which TWO of the following are types of optical disc storage? (Select exactly two.)

Accepted Answer

DVD. DVD (Digital Versatile Disc) is a type of optical disc storage that uses a laser to read and write data on a reflective plastic disc. It is a standard optical media format, distinct from magnetic or solid-state storage technologies.

Answer

SSD

Answer

HDD

Answer

Flash drive

Question 13

Which TWO are characteristics of a network switch? (Select exactly two.)

Accepted Answer

Operates at Layer 2 of the OSI model. A network switch operates at Layer 2 (Data Link Layer) of the OSI model, where it uses MAC addresses to make forwarding decisions. Unlike hubs, switches learn and store MAC addresses in a Content Addressable Memory (CAM) table, allowing them to forward frames only to the specific port associated with the destination MAC address, which reduces collision domains and improves network efficiency.

Answer

Operates at Layer 3

Answer

Connects different networks

Answer

Forwards data based on IP addresses

Question 14

Which THREE are common types of network cables? (Select exactly three.)

Accepted Answer

Fiber optic. Fiber optic cables use light pulses transmitted through glass or plastic fibers to carry data, offering high bandwidth, long-distance transmission, and immunity to electromagnetic interference. They are a standard network cable type in modern infrastructure, especially for backbone and high-speed connections.

Answer

USB

Answer

HDMI

Question 15

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

FC0-U61 Infrastructure Practice Test 7 — 15 Questions

Exhibit

FC0-U61 Infrastructure Practice Test 7 — 15 Questions

Exhibit