FC0-U71 Practice Test 50 — 15 Questions

Question 1

A technician needs to verify that a twisted-pair Ethernet cable is wired correctly and has no breaks. Which tool should be used?

Accepted Answer

Cable tester. A cable tester sends signals through each conductor in the twisted-pair cable and checks for continuity, correct pin-to-pin wiring (e.g., T568A or T568B), and shorts or opens. This makes it the correct tool to verify proper wiring and detect breaks in an Ethernet cable.

Answer

Multimeter

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Loopback plug

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Toner probe

Question 2

An organization implements a security policy where users must provide a password and a one-time code generated by a mobile app to log in. Which type of authentication is being used?

Accepted Answer

Two-factor authentication. Two-factor authentication (2FA) requires two different categories of authentication factors: something you know (the password) and something you have (the one-time code generated by the mobile app). Because the password and the OTP come from separate factor classes, this satisfies the definition of 2FA rather than single-factor or a single-category method. The mobile app acts as a soft token, but the overall scheme is still classified as two-factor authentication.

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Biometric authentication

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Token-based authentication

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Single-factor authentication

Question 3

Refer to the exhibit. A user can ping 192.168.1.1 but cannot ping 8.8.8.8. What is most likely the issue?

Accepted Answer

The default gateway is not forwarding traffic to external networks. The user can ping the local gateway (192.168.1.1), which confirms that the local IP configuration, subnet mask, and ARP resolution are working correctly. However, the inability to ping 8.8.8.8 (a public IP) indicates that traffic is not being routed beyond the local subnet. The most likely cause is that the default gateway is either misconfigured, down, or not performing IP forwarding to external networks, as the gateway is the router responsible for forwarding packets destined outside the local network.

Answer

IP address is invalid

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Subnet mask is incorrect

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DNS server is not configured

Question 4

A program needs to display a message based on a user's age. If age is 18 or over, it displays 'Adult'; otherwise, it displays 'Minor'. Which control structure should be used?

Accepted Answer

If-else statement. The if-else statement is the correct control structure because it evaluates a single condition (age >= 18) and executes one block of code if true ('Adult') and another block if false ('Minor'). This is the standard branching mechanism in most programming languages for binary decisions based on a comparison.

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For loop

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Switch-case statement

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While loop

Question 5

A programmer needs to store a collection of key-value pairs where each key is unique and maps to a value. Which data structure is best suited for this purpose?

Accepted Answer

Dictionary. A dictionary is specifically designed to store key-value pairs with unique keys, providing efficient lookup, insertion, and deletion operations. It ensures that each key is unique and maps directly to a value, making it the ideal choice for this requirement. Other data structures like arrays, stacks, and lists do not inherently support key-based access or enforce key uniqueness.

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Array

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Stack

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List

Question 6

Which TWO of the following are primitive data types commonly used in programming?

Accepted Answer

Integer. Integer (B) is a primitive data type because it directly represents whole-number values in a single, indivisible unit that the language's compiler or interpreter handles natively, such as int in Java/C# or int/long in C. Boolean (C) is also primitive because it stores a single truth value (true or false) as a fundamental, built-in type with no internal structure, e.g., bool in C++/C# or boolean in Java. By contrast, String (A) is typically a composite/reference type built from characters (or a class such as java.lang.String), Array (D) is a derived/aggregate type that holds multiple elements of another type, and Function (E) is a callable construct (often a reference type or object), not a primitive data type.

Answer

String

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Array

Answer

Function

Question 7

Which of the following is a characteristic of a strong password?

Accepted Answer

Contains a combination of uppercase, lowercase, numbers, and symbols. A strong password uses a mix of character types — uppercase, lowercase, numbers, and symbols — to increase entropy and resist brute-force and dictionary attacks. This complexity requirement is a widely accepted characteristic of strong passwords. Length also matters, but among the options, the combination of character classes is the defining characteristic.

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Is exactly 8 characters long

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Uses only lowercase letters

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Is the same as the username

Question 8

Which of the following software categories includes applications like Microsoft Teams and Slack?

Accepted Answer

Collaboration software. Microsoft Teams and Slack are team communication and collaboration platforms, so they fall under Collaboration software. These tools provide chat, video conferencing, file sharing, and integration with other work apps. Collaboration software is specifically designed to help groups work together, which matches the described applications.

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Productivity software

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Security software

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Development tools

Question 9

A web application uses a JavaScript function to validate user input on a registration form. The function checks that the password is at least 8 characters long and contains a number. When a user submits the form with a password "abc123", the validation passes even though the password has only 6 characters. The developer examines the code and finds that the function uses the condition: if (password.length >= 8 || /\d/.test(password)). Which logical error is causing this bug?

Accepted Answer

The condition uses OR instead of AND.. The condition uses OR (||) instead of AND (&&), so the validation passes if either condition is true. "abc123" has a number, so it passes. The regular expression is correct, length check is appropriate, and the function is called.

Answer

The function is not called.

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The regular expression is incorrect.

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The length check is incorrect because it uses >= instead of >.

Question 10

What is the primary risk of using public Wi-Fi without a VPN?

Accepted Answer

Data transmitted can be intercepted by attackers. Public Wi-Fi is often unencrypted, allowing attackers to intercept data transmitted over the network. A VPN encrypts traffic, protecting data in transit.

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The Wi-Fi network may be slower

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The device may overheat

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Increased risk of malware infection from the network

Question 11

A software development team follows a methodology where work is divided into fixed sequential phases: requirements, design, implementation, testing, deployment, and maintenance. Changes to requirements are difficult once a phase is completed. Which development methodology is being used?

Accepted Answer

Waterfall. The Waterfall model is a linear sequential software development methodology where each phase (requirements, design, implementation, testing, deployment, maintenance) must be completed before the next begins. This rigidity makes it difficult to accommodate changes to requirements once a phase is finished, exactly as described in the question.

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Spiral

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Scrum

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Agile

Question 12

A company is choosing between public, private, and hybrid cloud deployments. Which TWO statements correctly describe characteristics of these cloud models? (Select TWO.)

Accepted Answer

In a public cloud, resources are shared among multiple organizations.. Option C is correct because in a public cloud deployment, the cloud provider's infrastructure (compute, storage, networking) is multi-tenant, meaning resources are pooled and shared among many different organizations, which is the defining characteristic of public cloud. Option E is correct because a hybrid cloud is precisely defined as a composition of two or more distinct cloud infrastructures (typically a private cloud plus a public cloud) that remain unique entities but are bound together by technology enabling data and application portability. Option A is incorrect because public cloud generally offers the least direct control over security, since the provider manages the underlying infrastructure; private cloud typically gives the highest control. Option B is incorrect because a private cloud usually requires significant upfront capital expenditure for hardware and infrastructure, unlike public cloud's pay-as-you-go model. Option D is incorrect because a private cloud is owned and operated by the organization itself (or a dedicated third party exclusively for that organization), not by a third-party provider on shared infrastructure as described.

Answer

Public cloud offers the highest level of control over security.

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Private cloud requires no upfront capital expenditure.

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A private cloud is owned and operated by a third-party provider.

Question 13

Which type of malware is designed to replicate itself and spread to other computers without needing to attach to a host file?

Accepted Answer

Worm. Worms are self-replicating and spread independently, unlike viruses which attach to files.

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Trojan

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Virus

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Ransomware

Question 14

Which of the following is the best practice for creating a strong password?

Accepted Answer

Using a 14-character phrase with numbers and symbols. A strong password is at least 12 characters with a mix of uppercase, lowercase, numbers, and symbols.

Answer

Using your pet's name

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Using the same password for multiple accounts

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Using a sequence of 8 characters with letters only

Question 15

A data center administrator is considering virtualization to consolidate multiple physical servers. Which of the following is the PRIMARY benefit of using virtual machines in this environment?

Accepted Answer

Better utilization of physical hardware resources. The primary benefit of virtualization in a data center is better utilization of physical hardware resources. By running multiple virtual machines on a single physical host, the hypervisor allows the underlying CPU, memory, and storage to be shared efficiently, reducing idle capacity and maximizing the return on hardware investment.

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Reduction in the total amount of physical hardware needed

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Increased performance for each application

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Improved security by isolating applications