Free FC0-U71 practice test: 30 questions with answers

A router connects local networks to each other and to the internet, and switches connect local devices. The projector, scanner and speaker are peripherals, not networking devices.

A solid-state drive uses flash memory with no moving parts, and it is much faster than mechanical drives. Floppy, optical and tape storage are slower or obsolete for laptops.

A static IP address gives the server a fixed address that clients can reliably reach. Airplane mode, display settings and screen savers do not affect network addressing.

Traceroute shows each hop on the path and the time taken, which helps locate delays. The other tools do not measure network paths.

SaaS delivers complete applications that users access through a browser, with the provider managing the stack. IaaS provides virtual machines and storage to manage, PaaS supports developers, and on-premises hosting is not a cloud model.

Phishing uses deceptive messages to trick users into revealing credentials. Patching, backups and indexing are not attacks.

Multifactor authentication requires a second factor, so a stolen password alone is not enough. Reuse, written notes and sharing all weaken protection.

Full-disk encryption makes the stored data unreadable without the key. A screensaver does not protect the disk, and renaming files or turning off the battery do not protect data.

A firewall applies rules to allow or block traffic. Speakers, monitors and keyboards are not security filters.

Antivirus and anti-malware software detect and remove malicious code. The other applications do not provide protection.

A program is a set of instructions that a computer executes. Monitors, cables and ports are hardware.

A variable is a named location that stores a value which can change during execution. Printers and network protocols are not programming constructs, and a fixed value is a constant.

A loop repeats a block of code while a condition holds. Comments do not run, printer drivers are hardware software, and database indexes speed up queries.

An if statement is conditional logic, which chooses a path based on a condition. The other options are unrelated.

Comments document code and are ignored by the compiler or interpreter. Function calls execute code, database keys identify records, and packets carry network data.

A row in a table is a record containing values for each field. A field is a column, and cache and partitions are other concepts.

A primary key uniquely identifies each record. Duplicated columns, labels and passwords do not provide unique identification.

Normalization structures data into related tables to reduce redundancy. Compression reduces size, encryption protects data, and fragmentation describes disk layout.

Separate storage and restore testing make backups effective. A same-disk copy fails with the disk, off-site copies are needed for disasters, and backups still need protection.

SQL is the standard language for querying relational databases. HTML and CSS format web pages, and assembly is a low-level programming language.

RAM is volatile working memory, so data is lost when power is off. Permanent storage is the drive, the processor performs calculations, and the graphics card renders images.

An operating system is a set of instructions that runs on hardware, so it is software. The keyboard, drive and switch are physical devices.

A bit is a single binary digit. A byte is eight bits, and kilobytes and megabytes are larger multiples.

CPU stands for central processing unit, which executes instructions. The other expansions do not describe a standard component.

Binary uses the digits 0 and 1 and underlies computer data representation. Decimal uses ten digits, Roman is a historical notation, and hexadecimal is a shorthand for binary.

A spreadsheet application performs calculations on tabular data. A video editor, database server and firewall serve different purposes.

Updates deliver security fixes and bug fixes. They do not replace backups or passwords, and cannot stop user errors.

An image editor modifies photos. The other software types serve different purposes.

An operating system manages hardware and provides services for applications. The other categories are application software.

CRM software tracks customers, leads and interactions. The other applications serve unrelated purposes.