FC0-U71 Practice Test 31 — 15 Questions

Question 1

A developer writes a script to calculate the average of a list of numbers. The script uses a loop to sum the numbers and then divides by the count. Which programming concept does this represent?

Accepted Answer

Iteration. The script uses a loop to repeatedly access each number in the list and add it to a running total. This repeated execution of a block of code (the loop body) is the defining characteristic of iteration. Iteration is the correct programming concept because the average calculation depends on cycling through a sequence of elements, which is exactly what a loop provides.

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Selection

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Recursion

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Sequence

Question 2

Which of the following are phases in the software development lifecycle (SDLC)?

Accepted Answer

Design. Option A (Design) is correct because designing the system architecture, components, interfaces, and data models is a core SDLC phase that translates requirements into a blueprint for implementation. Option B (Testing) is correct because verification and validation activities—unit, integration, system, and acceptance testing—form a recognized SDLC phase ensuring the software meets requirements and is defect-free. Option C (Deployment) is correct because releasing the built software into production or a target environment, including installation, configuration, and rollout, is a standard SDLC phase. Option D (Requirements gathering) is correct because eliciting, analyzing, documenting, and validating stakeholder needs is the foundational SDLC phase that drives all subsequent work. Option E (Compilation) is not a phase but a build-time activity performed by a compiler within the implementation/build stage, so it does not represent a distinct SDLC phase.

Answer

Compilation

Question 3

A user reports that their laptop cannot connect to the corporate Wi-Fi network. Other users in the same area are connected without issues. The laptop shows it is connected to the Wi-Fi but has no internet access. Which of the following is the MOST likely cause?

Accepted Answer

Incorrect IP configuration. The laptop shows it is connected to Wi-Fi but has no internet access, which indicates that the Layer 3 (network layer) configuration is faulty. An incorrect IP configuration, such as a static IP in the wrong subnet or a failed DHCP lease, prevents the laptop from obtaining a valid default gateway and DNS server, breaking internet connectivity while the Wi-Fi association (Layer 2) remains intact.

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Weak Wi-Fi signal

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SSID broadcast disabled

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MAC address filter enabled

Question 4

Based on the exhibit, which of the following is the purpose of the DNS server address?

Accepted Answer

To convert domain names to IP addresses. The DNS server address is used to resolve human-readable domain names (like www.example.com) into machine-readable IP addresses. This is the fundamental purpose of the Domain Name System, which translates names to IPs so that network devices can locate and communicate with each other.

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To encrypt network traffic

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To route packets to the internet

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To assign IP addresses to clients

Question 5

Which of the following is an example of an input device?

Accepted Answer

Keyboard. A keyboard is an input device because it allows users to send data and commands to a computer by pressing keys, which are converted into electrical signals that the system processes. Input devices are defined as hardware components that provide data and control signals to a computer, and the keyboard is a classic example of this category.

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Printer

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Monitor

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Speaker

Question 6

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.

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HDMI

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Coaxial

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USB

Question 7

A company is deploying new laptops for employees. The IT department requires that the laptops have fast storage, support for external 4K monitors, and the ability to connect to a wireless network. Which THREE of the following should be included?

Accepted Answer

Wi-Fi 6 (802.11ax). Wi-Fi 6 (802.11ax) (A) is correct because it is a current wireless networking standard that provides the required wireless network connectivity with improved throughput and efficiency. NVMe M.2 SSD (C) is correct because NVMe drives attached via the M.2 interface deliver the fast storage the IT department requires, far exceeding SATA HDD performance. HDMI 2.0 port (D) is correct because HDMI 2.0 supports 4K video output at up to 60 Hz, satisfying the external 4K monitor requirement. SATA HDD (B) is not appropriate because mechanical hard drives are slow and do not meet the fast-storage requirement. Bluetooth 4.0 (E) is not required because the scenario asks for wireless network connectivity, which is provided by Wi-Fi, not Bluetooth, and Bluetooth 4.0 is an older standard.

Answer

SATA HDD

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Bluetooth 4.0

Question 8

A technician is troubleshooting a network connectivity issue. The user can access local network resources but cannot browse the internet. The technician suspects a DNS problem. Which of the following is the primary function of DNS?

Accepted Answer

Translate domain names to IP addresses. DNS (Domain Name System) is essentially the internet's phonebook: it resolves human-readable domain names like www.example.com into the numerical IP addresses (e.g., 192.0.2.1) that computers use to route traffic. Without DNS, users would have to remember IP addresses for every website. In the scenario, the technician suspects DNS because local resources (accessed by IP or local name resolution) work, but internet browsing fails—consistent with a DNS resolution failure.

Answer

Filter unwanted network traffic

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Provide wireless network access

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Assign IP addresses to devices on the network

Question 9

A memory address is displayed as 0x1A3F. What is the correct base of this representation?

Accepted Answer

Hexadecimal. The prefix '0x' is the standard notation used to indicate a hexadecimal (base-16) number in programming and networking contexts. Hexadecimal uses digits 0-9 and letters A-F, so the presence of 'A' and 'F' in 0x1A3F confirms it cannot be decimal, octal, or binary. Therefore, the correct base is hexadecimal.

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Decimal

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Octal

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Binary

Question 10

An IT professional is explaining to a client the difference between an HDD and an SSD. Which statement best describes a key advantage of an SSD over an HDD?

Accepted Answer

SSDs are more resilient to physical shock because they have no moving parts.. SSDs store data in NAND flash memory with no moving mechanical parts, so they tolerate drops, vibration, and shock far better than HDDs, whose spinning platters and moving read/write heads are vulnerable to physical damage. This durability advantage is a direct consequence of the solid-state design and is a key differentiator in mobile and ruggedized environments.

Answer

SSDs require a constant power supply to retain data.

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SSDs provide larger storage capacities at a lower cost per gigabyte.

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SSDs use laser technology to read and write data.

Question 11

A company is planning to deploy tablets for field sales representatives. Which TWO mobile device features would be most useful for navigation and contactless payments?

Accepted Answer

GPS. Option D (GPS) is correct because GPS receivers in tablets use satellite signals to determine precise geographic position, which directly supports turn-by-turn navigation and location-based routing for field sales representatives. Option E (NFC) is correct because Near Field Communication enables short-range (typically within about 4 cm) contactless data exchange, which is the technology behind tap-to-pay mobile wallets such as Apple Pay and Google Pay. Option A (biometric authentication) is useful for securely unlocking the device and authorizing payments, but it is an authentication mechanism rather than a navigation or contactless-payment feature itself. Option B (gyroscope) and Option C (accelerometer) are motion sensors used for screen orientation, gaming, and step detection, and neither provides navigation positioning or contactless payment capability.

Answer

Biometric authentication (fingerprint)

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Gyroscope

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Accelerometer

Question 12

A technician is setting up a new computer on a network. The computer receives an IP address of 169.254.1.5. Which of the following is the most likely issue?

Accepted Answer

The DHCP server is unavailable. The IP address 169.254.1.5 falls within the Automatic Private IP Addressing (APIPA) range (169.254.0.0/16), which Windows automatically assigns when a DHCP client fails to receive an IP lease from a DHCP server. This indicates that the DHCP server is either unreachable or not responding, making D the correct answer.

Answer

The network cable is faulty

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The DNS server is unreachable

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The gateway is misconfigured

Question 13

A development team is adopting Scrum. Which TWO roles are defined in the Scrum framework? (Select the two correct answers.)

Accepted Answer

Scrum Master. Option A, Scrum Master, is correct because Scrum formally defines this role to serve the team by facilitating Scrum events, removing impediments, and coaching the organization on Scrum practices. Option B, Product Owner, is correct because Scrum defines this role as accountable for maximizing product value and managing the Product Backlog, including ordering items and ensuring the team understands them. Together, the Scrum Master and Product Owner are two of the three official Scrum accountabilities, alongside the Developers. Option C, Business Analyst, is not a defined Scrum role; such responsibilities may exist but are not part of the framework. Option D, Quality Assurance Lead, is likewise not a Scrum-defined role, as quality is a shared team responsibility. Option E, Project Manager, is not a Scrum role, since Scrum distributes management responsibilities among the Scrum Master, Product Owner, and Developers rather than using a traditional project manager.

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Business Analyst

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Quality Assurance Lead

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Project Manager

Question 14

Which of the following is the primary function of a router in a home network?

Accepted Answer

Connects the home network to the internet. A router's primary function is to connect the home network to the internet by routing packets between the local network and the ISP's network, performing NAT and forwarding traffic based on IP addresses. It is the gateway device that sits at the boundary between the LAN and the WAN. While many home routers also include a switch, wireless AP, and DHCP server, those are secondary functions.

Answer

Converts ISP signal to digital

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Assigns IP addresses to devices

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Provides wireless connectivity only

Question 15

Which THREE of the following are common methods for securing a wireless network?

Accepted Answer

Implementing MAC address filtering. MAC address filtering (A) is a common wireless security method because the access point maintains an allow-list of client hardware addresses and drops frames from any NIC whose MAC is not listed, adding a layer of access control. Disabling SSID broadcast (B) is also commonly used, since the AP omits the SSID in its beacon frames, making the network less visible to casual scanners and requiring clients to know the network name. WPA2 encryption (D) is the strongest of the listed options and is a standard method for securing wireless traffic, using AES-CCMP under the 802.11i standard to provide confidentiality and integrity. WEP (C) is not a valid answer because it is a deprecated, easily cracked encryption scheme, and changing the default IP address range (E) is a general network-hardening step that does not secure the wireless medium itself.

Answer

Enabling WEP encryption

Answer

Changing the default IP address range