FC0-U71 Exam Questions and Answers

.pkg

macOS installer packages use the .pkg extension, a bundle format that the Installer application processes to place files and run scripts. This distinguishes it from .dmg disk images and .app application bundles, satisfying the question's requirement for the installer package extension.

.deb and .rpm

Debian-based distributions such as Ubuntu use .deb packages managed by dpkg and apt, while Red Hat-based distributions such as Fedora and RHEL use .rpm packages managed by rpm and dnf. These are the two dominant native Linux package formats for installing applications.

Silent installation

Silent installation runs the installer with command-line switches such as /quiet or /qn, suppressing all dialogue boxes and prompts. This directly satisfies the stem's constraint of no user interaction across 50 machines, allowing the technician to deploy the software unattended, typically via a script or management tool.

Scripting language

Python code here executes directly by an interpreter at runtime, with no separate compilation step producing machine code. That interpreted, run-as-written execution model is precisely what defines a scripting language, satisfying the stem's stated constraint.

Microsoft Teams

Microsoft Teams is a collaboration and communication platform, not a web browser. It renders content within its own application shell and does not provide general-purpose URL navigation or browsing features, unlike Chrome, Edge, Firefox or Safari, so it is the correct non-browser answer.

An application that runs within a web browser and processes data on a server

A web application executes its interface inside a browser while business logic and data processing occur on a remote server, satisfying both halves of the stem's definition. This client–server split distinguishes it from native desktop software, which processes locally, and from static websites, which serve content without server-side processing.

Supports simultaneous multi-user access

A database management system provides concurrency control, letting many users read and write customer records simultaneously without corrupting data. A flat file offers no such locking or transaction mechanism, so concurrent edits overwrite each other, making the database the appropriate choice.

Entity integrity

Entity integrity requires every row to have a unique, non-null primary key, so the OrderID column must contain a distinct value in each record. Referential integrity instead governs foreign-key relationships between tables, which the stem does not describe.

Referential integrity

A foreign key constraint enforces referential integrity: every value in Enrollments' student key must match an existing Students primary key, or be null. This prevents orphaned enrolment rows and blocks deletion of a referenced student, directly satisfying the stem's requirement that the relationship enforce valid cross-table references.

Document store

MongoDB stores data as BSON documents within collections, where each document holds field-value pairs including arrays such as 'tags'. This schema-flexible structure is the defining characteristic of a document store, distinguishing it from key-value, column-family, and graph NoSQL categories.

SELECT * FROM Customers WHERE city = 'London';

SELECT * retrieves every column, FROM Customers names the source table, and the WHERE clause filters rows where city equals 'London'. The asterisk wildcard expands to all columns, satisfying the requirement to return complete rows matching the specified city condition.

Normalization

Normalization splits tables to eliminate redundancy.

Waterfall

Waterfall matches the stem's fixed sequential phases, where each stage completes before the next begins and requirements freeze once design starts. Its linear, document-driven structure makes late requirement changes costly, satisfying the constraint that changes are difficult after a phase completes. Iterative and Agile approaches would instead accommodate evolving requirements.

Scrum

Scrum matches because it prescribes fixed-length sprints, a prioritised backlog, team estimation, daily standups and a sprint review demonstrating working software. These ceremonies and artefacts are Scrum's defining structure, satisfying the stem's two-week iteration, daily progress meetings and stakeholder demonstration constraints.

Algorithm

A finite, ordered set of steps that transforms input into output defines an algorithm. The described compare-swap-repeat procedure is precisely such a sequence, satisfying the stem's requirement for the term naming a step-by-step sorting procedure. Data structures, programs and pseudocode denote other concepts.

Flowchart

A flowchart uses standardised ANSI symbols, diamonds for decisions and rectangles for processes, mapping conditions such as membership to actions such as applying a discount. This visual notation represents branching program logic directly, unlike pseudocode or a data dictionary, which lack decision symbols.

Dictionary

A dictionary stores key-value pairs, mapping each student name directly to a grade. Hash-based lookup gives average constant-time access by name, satisfying the quick retrieval requirement that a list or array would only meet through linear searching.

Unit testing

Unit testing exercises individual functions in isolation, verifying that each returns correct results for given inputs. This directly matches the stem's constraints: tests target single functions within a module and remain isolated from other system components, confirming correctness at the smallest testable unit before integration.

0101

Binary 0101 equals 4 plus 1, which is 5 in decimal. Reading the bits right to left as powers of two (1, 2, 4, 8), the ones occupy the 4 and 1 positions, giving 4 + 1 = 5. The leading zero is just padding to four bits.

Hexadecimal

MAC addresses are 48-bit identifiers written as six colon- or hyphen-separated octets, each expressed in hexadecimal (0–9, A–F). Hexadecimal's base-16 grouping maps cleanly onto 8-bit bytes, so this notation uniquely satisfies the stem's requirement for identifying a network interface's hardware address.

Lossy compression

Lossy compression permanently discards data during encoding to shrink file size, which is why the decompressed image shows reduced quality. Lossless techniques such as PNG or ZIP preserve every original pixel, so the observed degradation confirms the lossy method was applied.

RAM

Running many applications concurrently consumes memory for each process's working set. When RAM is exhausted, the system pages to disk, causing the slowdown described. Insufficient RAM is therefore the bottleneck for this simultaneous multi-application workload.

SSDs are more resilient to physical shock because they have no moving parts.

SSDs store data in flash memory with no spinning platters or actuator arms, so there is nothing mechanical to damage during drops or vibration. This directly satisfies the stem's requirement to describe a key advantage over HDDs.

Firmware

Firmware is low-level software stored on a motherboard chip, typically a ROM or flash memory device, that initialises hardware and starts the boot process. Inspecting it directly addresses the stem's constraint: software residing on a chip rather than on disk, which is exactly what the technician examines when a computer fails to boot.

RAM

Dual-channel architecture requires matched memory modules installed in paired slots, so adding or replacing RAM in the correct slot pairs doubles the memory bus width. The technician therefore replaces RAM, not the CPU or storage.

MDM

MDM centrally enforces device policies such as mandatory encryption and remote wipe across enrolled smartphones. It satisfies the requirement to apply security controls to company-issued devices, unlike standalone antivirus or VPN tools that do not manage device configuration.

Star

A star topology connects every node to a central switch, so a single cable failure isolates only that one device while all others keep communicating. This directly satisfies the resilience constraint and centralises troubleshooting at one point.

NVMe M.2

NVMe M.2 drives communicate directly over the PCIe bus rather than the SATA AHCI interface, removing the roughly 600 MB/s SATA ceiling. This delivers the largest sequential and random throughput gain over the existing SATA SSD.

Modem

A modem performs the required modulation/demodulation, translating the ISP's analogue carrier signal on cable or fibre into digital Ethernet frames the home router and devices can process. This directly satisfies the stem's constraint of converting the incoming ISP signal into a usable digital signal, unlike a switch, router or access point.

Laser

Laser printers fuse toner onto paper using a drum and heated fuser, avoiding the per-page ink and printhead costs of inkjet. Toner yields thousands of pages at a low unit cost, making laser the standard choice for high-volume monochrome office text printing.

Preventing unauthorized access to information

Preventing unauthorized access to information directly satisfies the confidentiality principle, which safeguards data from disclosure to parties lacking authorisation. Unlike integrity, which preserves data accuracy, or availability, which ensures timely access, confidentiality centres on restricting read access through controls such as encryption, access permissions and Microsoft Entra ID authentication policies.

Multi-factor authentication

Combining a password (something known) with a one-time code sent to a mobile phone (something possessed) satisfies two distinct authentication factors, which is precisely what multi-factor authentication requires. The policy's two-step login therefore instantiates MFA rather than single-factor or knowledge-based authentication alone.

Phishing

Phishing exploits social engineering by masquerading as a trusted entity—here, the user’s bank—to trick the recipient into clicking a fraudulent link. The urgent language and threat of account closure create a false sense of crisis, bypassing rational scrutiny. This satisfies the constraint of unauthorised credential harvesting via deceptive communication, distinguishing it from technical exploits like malware injection.

MyD0g!sF1d0

MyD0g!sF1d0 combines upper and lower case letters, digits and a symbol across twelve characters, giving far greater brute-force resistance than shorter or single-character-class alternatives. Length plus mixed character classes directly increases the search space an attacker must exhaust.

Integrity

Integrity means data remains unaltered except by authorised action. Although the user was authenticated and had legitimate access, the modification itself was unauthorised, so the file's trustworthiness was compromised. Confidentiality and availability are unaffected, as no data was exposed or made inaccessible.

Worm

A worm self-replicates across networks without attaching to a host file, satisfying the stem's defining constraint. Unlike viruses, which require a host executable to spread, worms propagate independently via exploits or network shares, consuming bandwidth and executing payloads autonomously. This distinction makes worm the precise match for the scenario described.