Which of the following is the most important consideration when opening a file on an OS GUI?
A.File extensionCorrect
B.Default permissions
C.Backup policy
D.Data compression
Explanation
In a graphical operating system, the file extension tells the OS which file type it is and which associated application should open it when the user double-clicks the file. Permissions decide whether a user may open a file, but they are not what the GUI uses to choose how to open it. Backup policy and data compression have nothing to do with how a file is opened.
A database has the following schema:
| ID | Name | Age |
|---|---|---|
| 2 | John | 36 |
| 6 | Jane | 39 |
| 12 | Allison | 42 |
| 21 | Anna | 29 |
Which of the following is the number of records in the schema?
A.3
B.4Correct
C.12
D.21
Explanation
A record is one row of a table. The table has four rows (John, Jane, Allison and Anna), so it holds four records. Three is the number of fields (columns: ID, Name and Age), and 12 and 21 are ID values, not counts.
Which of the following devices extends the range of a network?
A.Modem
B.Server
C.Host firewall
D.Access pointCorrect
Explanation
An access point connects wireless clients to the wired network and is added to extend network coverage to areas the existing network does not reach. A modem connects the network to the ISP, a server provides services to clients, and a host firewall filters traffic on a single device; none of them extends the network's range.
A user receives a notification about a new software vulnerability. Which of the following is the best way to secure the software?
A.Configuring a firewall
B.Applying updatesCorrect
C.Enabling authentication
D.Uninstalling the program
Explanation
Vendors fix known vulnerabilities by releasing patches, so applying the update removes the flaw while keeping the software usable. A firewall or authentication may reduce exposure but leave the vulnerable code in place. Uninstalling removes the risk but also the software the user needs, so it is not the best way to secure it.
Which of the following is used to determine whether users accessed inappropriate online content?
A.System logs
B.Cookie data
C.Location tracking
D.Web browser historyCorrect
Explanation
Web browser history records the sites and pages a user visited, so it directly shows whether inappropriate online content was accessed. System logs record operating system events such as sign-ins, errors and service activity rather than the web pages viewed. Cookie data only holds site-specific settings and session information, and location tracking shows where a device is, not what was viewed.
A company updates its password policy to require that all passwords be reset every 60 days. Which of the following best describes this requirement?
A.Password complexity
B.Password management
C.Password expirationCorrect
D.Password privacy
Explanation
Forcing a password change after a fixed period, such as every 60 days, is password expiration (maximum password age). Complexity governs what characters and length a password must contain, password management refers to storing and handling passwords (for example with a password manager), and privacy is about not sharing a password.
Which of the following encryption types protects data at rest?
A.File-levelCorrect
B.VPN
C.HTTPS
D.Plaintext
Explanation
Data at rest is data stored on a disk or other medium, and file-level encryption protects it by encrypting the stored files. A VPN and HTTPS encrypt data in transit across a network. Plaintext is unencrypted data, so it provides no protection.
Which of the following is the smallest storage unit?
A.Petabyte
B.Terabyte
C.KilobyteCorrect
D.Megabyte
Explanation
Storage units grow by a factor of about 1,000 (or 1,024) at each step: kilobyte, megabyte, gigabyte, terabyte, petabyte. Of the options, the kilobyte is the smallest. A megabyte is about 1,000 kilobytes, and terabytes and petabytes are much larger still.
A user lives in a remote area that does not have cabling or towers available. The user wants to connect to the internet. Which of the following is the best solution?
A.Fiber optic
B.DSL
C.Cellular
D.SatelliteCorrect
Explanation
Satellite internet needs only a dish with a clear view of the sky, so it works where there is no cabling and no cell tower. Fiber optic and DSL both require a physical line run to the home (DSL uses telephone cabling). Cellular service depends on a nearby cell tower, which the scenario says is unavailable.
Which of the following display types is bidirectional?
A.DisplayPort
B.VGA
C.DVI
D.USB-CCorrect
Explanation
USB-C is a bidirectional interface: the same port and cable can carry video out, data in both directions and power in either direction (for example, a monitor that also charges the laptop and acts as a USB hub). VGA, DVI and DisplayPort carry the video signal one way, from the source to the display.
A user needs to read documentation on a device while walking around outdoors in bright sunlight. Which of the following is the best type of device for this purpose?
A.Laptop
B.Tablet
C.E-readerCorrect
D.Smartphone
Explanation
E-readers use electronic ink (e-paper) screens that reflect ambient light instead of emitting it, so they stay readable in direct sunlight and are light enough to carry while walking. Laptops, tablets and smartphones use backlit LCD or OLED screens that wash out in bright sunlight, and a laptop is awkward to use while walking.
A user attempts to log in to a website and receives a prompt to update their password. Which of the following is this an example of?
A.Password privacy
B.Password history
C.Password complexity
D.Password expirationCorrect
Explanation
Password expiration (maximum password age) forces users to change a password after a set period, so the next sign-in prompts for a new one. Password history prevents reusing previous passwords, password complexity sets character requirements for the new password, and password privacy is about not sharing it; none of these trigger the change prompt.
Which of the following types of AI is used to edit images?
A.Assistive
B.Predictive
C.Chatbot
D.GenerativeCorrect
Explanation
Generative AI creates new content such as text, images, audio and video, and image editing features like generative fill or object removal use it to produce new pixels. Predictive AI forecasts outcomes from historical data, a chatbot is a conversational interface, and assistive AI describes tools that help users with tasks rather than producing new images.
Given the following pseudocode:
```html
<BODY>
<P>This is a paragraph.</P>
</BODY>
```
Which of the following best represents the type of language used by this code?
A.MarkupCorrect
B.Query
C.Compiled
D.Scripting
Explanation
The code is HTML, which uses tags such as <BODY> and <P> to describe the structure of a document, making it a markup language. It contains no logic to compile or run as a script, and it does not retrieve data from a database the way a query language such as SQL does.
Which of the following can be used to input commands for a computer to execute?
A.Services
B.Attributes
C.Process
D.ConsoleCorrect
Explanation
A console (command-line interface or terminal) is where a user types commands for the operating system to execute. Services are background programs, a process is a running instance of a program, and attributes are properties of files or objects; none of them accept typed commands.
Which of the following is the last tool that should be used when creating a custom-length network cable?
A.Cable testerCorrect
B.Crimper
C.Wire cutter
D.Ethernet connector
Explanation
To make a cable you cut it to length with a wire cutter, arrange the wires and fit the RJ45 (Ethernet) connector, and crimp it with a crimper. The cable tester is used last to confirm every pair is wired correctly and has continuity. An Ethernet connector is a part, not a tool.
Given the following pseudocode:
```
10 FOR Q=1 TO 100
20 PRINT Q
30 NEXT Q
40 EXIT
```
Which of the following best represents line 10?
A.Attribute
B.Sequence
C.Branch
D.LoopCorrect
Explanation
Line 10 starts a FOR loop: it sets a counter Q from 1 to 100, and NEXT Q on line 30 sends execution back so line 20 repeats 100 times. Repeating a block a set number of times is a loop. A branch chooses one path based on a condition (IF/THEN) rather than repeating, a sequence is simply statements run one after another, and an attribute is a property of an object, not a control structure.
A user is logged in but unable to access a shared folder on the network. Which of the following security concepts is in place?
A.Authentication
B.AuthorizationCorrect
C.Accounting
D.Non-repudiation
Explanation
The user has already proven their identity by logging in, which is authentication. Being denied the shared folder is authorization: the permissions decide what an authenticated user may access. Accounting records what users do, and non-repudiation proves that a user cannot deny an action.
Given the following table:
| ID | Month | Day | Year | Name |
|---|---|---|---|---|
| 1 | October | 6 | 1969 | James |
| 2 | May | 13 | 1970 | Jane |
| 3 | September | 25 | 1999 | John |
| 4 | April | 15 | 1976 | Helena |
Which of the following fields best represents a primary key?
A.IDCorrect
B.Month
C.Day
D.Year
E.Name
Explanation
A primary key must uniquely identify each row and never repeat or be empty, and the sequential ID field is designed for exactly that. Month, day and year values can be shared by many people, and names are not guaranteed to be unique either, so none of them can reliably identify a single record.
A technician needs to install input devices while setting up a new desktop PC. Which of the following should the technician install? (Choose two.)
A.Printer
B.MouseCorrect
C.KeyboardCorrect
D.CPU
E.Speaker
F.SSD
Explanation
A mouse and a keyboard send data into the computer, so they are input devices. A printer and speakers are output devices, the CPU is the processing component, and an SSD is a storage device.
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