FC0-U61 Practice Test 33 — 15 Questions

Question 1

A technician is troubleshooting a workstation that cannot connect to a server at 192.168.1.100. The workstation's IP configuration shows: IP: 192.168.2.50, Subnet: 255.255.255.0, Gateway: 192.168.2.1. Which of the following is the MOST likely cause of the connectivity issue?

Accepted Answer

Workstation and server are on different subnets with no routing. The workstation's IP address (192.168.2.50) and the server's IP address (192.168.1.100) belong to different subnets (192.168.2.0/24 and 192.168.1.0/24, respectively). Without a router configured to forward traffic between these subnets, the workstation cannot reach the server, even though the default gateway (192.168.2.1) is correct for its own subnet.

Answer

Incorrect default gateway

Answer

Incorrect subnet mask

Answer

Duplicate IP address on the network

Question 2

A technician is troubleshooting a network where users in one department cannot reach a web server in another subnet. The technician confirms the server is running and the switch ports are up. Which of the following should be checked NEXT?

Accepted Answer

Router configuration. Since the server is running and switch ports are up, the issue is likely at Layer 3 (network layer). The router is responsible for forwarding traffic between subnets, so a misconfigured router (e.g., missing static route, incorrect ACL, or routing protocol issue) would prevent inter-subnet communication. Checking the router configuration is the logical next step to verify that routing is properly set up for the destination subnet.

Answer

DHCP server scope

Answer

Firewall rules on the server

Answer

DNS server settings

Question 3

A user reports that their computer cannot access the internet, but it can reach other devices on the local network. Which of the following is the MOST likely cause?

Accepted Answer

Misconfigured default gateway. The default gateway is the router interface that connects the local network to external networks, such as the internet. If the default gateway is misconfigured (e.g., wrong IP address or subnet mask), the computer can still communicate with devices on the same subnet using ARP and Layer 2 switching, but it cannot route packets to external destinations because it has no valid next-hop address. This directly explains why local access works but internet access fails.

Answer

Incorrect DNS server address

Answer

Faulty network cable

Answer

Local firewall blocking all outbound traffic

Question 4

Refer to the exhibit. A user is able to browse the internet using the Ethernet connection but not the Wi-Fi. What is the most likely cause?

Accepted Answer

The Wi-Fi adapter is not connected to any network. The exhibit shows that the Ethernet interface has an IP address (192.168.1.114) and is connected to the internet, while the Wi-Fi interface shows 'Not connected' with no IP address assigned. Since the user can browse the internet via Ethernet but not Wi-Fi, the most likely cause is that the Wi-Fi adapter is not connected to any network, meaning it has not associated with a wireless SSID or obtained an IP address via DHCP.

Answer

The Wi-Fi adapter is disabled

Answer

The DNS suffix is missing

Answer

The default gateway is incorrect

Question 5

Refer to the exhibit. A system administrator notices that the computer occasionally freezes and data read errors occur. What should the administrator do?

Accepted Answer

Replace Disk 0. Disk 0 is the system disk (as indicated by the 'System' label in the exhibit), and the described symptoms—occasional freezing and data read errors—are classic indicators of a failing hard drive. Replacing Disk 0 addresses the root cause because a failing system disk can cause intermittent read failures and system hangs. Running CHKDSK or updating drivers would only mask the problem temporarily, and replacing Disk 1 (a non-system disk) would not resolve system-level freezes.

Answer

Update the storage controller driver

Answer

Replace Disk 1

Answer

Run CHKDSK on both disks

Question 6

Refer to the exhibit. A user cannot access the internet. What does this output indicate?

Accepted Answer

The default gateway cannot reach the remote network. The output shows a successful ping to the default gateway (192.168.1.1) but a failed ping to a remote IP (8.8.8.8). This indicates that the user's local network connectivity is intact, but the default gateway cannot forward traffic to the remote network, likely due to a missing or incorrect route on the gateway or an upstream connectivity issue.

Answer

The user's IP address is invalid

Answer

The DNS server is down

Answer

The local network cable is unplugged

Question 7

A technician is configuring a small office network with 15 computers. The computers need to share files and a printer. The technician decides to use a topology where each computer is connected to a central device. Which physical topology is being implemented?

Accepted Answer

Star. The star topology connects each computer directly to a central device, such as a switch or hub. This allows all 15 computers to share files and a printer through the central device, making it the correct choice for the described small office network.

Answer

Ring

Answer

Mesh

Answer

Bus

Question 8

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 9

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 10

A user wants to connect a laptop to a corporate wireless network. What internal component must be present in the laptop?

Accepted Answer

Wireless NIC. A Wireless NIC (Network Interface Card) is the internal component required for a laptop to connect to a corporate wireless network. It contains a radio transceiver that communicates with wireless access points using IEEE 802.11 standards (e.g., 802.11ax), handling frame encapsulation, authentication, and encryption such as WPA3. Without a wireless NIC, the laptop has no physical layer capability to transmit or receive Wi-Fi signals.

Answer

Cellular modem

Answer

Infrared port

Answer

Bluetooth adapter

Question 11

A company wants to use a cloud service where they provide their own operating system and applications, but the provider manages the physical hardware and virtualization layer. Which cloud service model does this describe?

Accepted Answer

Infrastructure as a Service (IaaS). Infrastructure as a Service (IaaS) provides virtualized computing resources over the internet, where the customer manages the operating system, applications, and middleware, while the cloud provider handles the physical hardware, storage, and network infrastructure. In this model, the provider manages the virtualization layer (hypervisor) and underlying physical servers, but the customer retains full control over the OS and applications, matching the scenario exactly.

Answer

Platform as a Service (PaaS)

Answer

Desktop as a Service (DaaS)

Answer

Software as a Service (SaaS)

Question 12

A network technician observes that a DHCP server is not issuing IP addresses to clients. The DHCP server is running on a Windows Server with a static IP of 192.168.1.10. Clients are on the same subnet. Which of the following should the technician check FIRST?

Accepted Answer

Whether the DHCP Server service is running. The most fundamental check when a DHCP server fails to issue IP addresses is whether the DHCP Server service itself is running. If the service is stopped, the server cannot respond to any DHCP Discover messages, regardless of scope configuration or network topology. Since the clients are on the same subnet, no router forwarding is required, making service status the logical first step.

Answer

Whether the DHCP scope is full

Answer

Whether a router is forwarding DHCP broadcasts

Answer

Whether the clients have a wireless connection

Question 13

A company has two office buildings 1.5 km apart and needs to connect their networks with a high-speed, reliable link. Which cabling type is most appropriate?

Accepted Answer

Fiber optic. Fiber optic cabling is the most appropriate choice for connecting two office buildings 1.5 km apart because it supports high-speed data transmission over long distances (up to several kilometers) with minimal signal loss and immunity to electromagnetic interference (EMI). Unlike copper-based cables, fiber optic uses light pulses to transmit data, making it ideal for reliable, high-bandwidth links between separate buildings.

Answer

Cat6a

Answer

Coaxial

Answer

Cat5e

Question 14

A network administrator wants to automatically assign IP addresses to all devices on the network. Which service should be configured on the server?

Accepted Answer

DHCP. Dynamic Host Configuration Protocol (DHCP) is the correct service because it automatically assigns IP addresses, subnet masks, default gateways, and other network configuration parameters to devices on a network. This eliminates the need for manual static IP configuration and ensures each device receives a unique IP address from a defined pool, preventing address conflicts.

Answer

DNS

Answer

HTTP

Answer

NAT

Question 15

After a network upgrade, a user reports that their computer intermittently loses network connectivity. The link light remains on, but the activity light flashes rapidly and irregularly. What is the most likely cause?

Accepted Answer

Bad Ethernet cable. The intermittent connectivity with the link light on but the activity light flashing rapidly and irregularly is a classic symptom of a faulty or marginal Ethernet cable. A bad cable can cause excessive collisions or frame errors, leading to retransmissions that manifest as rapid, irregular activity light flashing while the physical link (link light) remains established. This is distinct from issues like IP conflicts or driver corruption, which typically do not produce this specific link/activity light behavior.

Answer

IP address conflict

Answer

Driver corruption

Answer

Faulty NIC