Level 0 exam — IT & Systems

Exam — fresh questions

12 questions to validate the fundamentals with Sofiane, a support technician at a distribution SME in Algiers: the role of IT in business, hardware (workstation, server, peripherals), operating systems (Windows, macOS, Linux) and digital vocabulary.
Answer everything, then click Check: your score and explanations will appear.

0.1 · Recall

1. What does IT really do in a company?

Keep the IS running, secure and evolving Only repair computers that have broken down Sell computer hardware to companies Create the company's websites and logos

IT is not just "fixing PCs": it keeps the information system that activity depends on running, secure and evolving.

0.1 · Application

2. Sofiane wants to progress fast in IT. What strategy does he follow?

Specialize immediately in a single technology Build a generalist foundation before specializing Learn only user support Wait to have a degree before practising

A generalist foundation (hardware, OS, network, accounts, cloud, security) is built first; specialization comes afterwards.

0.1 · Arbitration

3. Sofiane's SME messaging goes down. How does he describe the incident?

A simple technical problem with no consequence A hardware failure to replace urgently A business outage: orders and quotes blocked A security flaw to report to the customer

A technical IT outage translates into a business outage: IT is not beside the company, it keeps it running.

0.2 · Recall

4. What distinguishes a server from a workstation?

The server is always a more powerful machine The server does not need an operating system The workstation serves several users at once The server serves several users, continuously

A server provides a service to several users continuously and reliably, hence redundancy and 24/7 operation.

0.2 · Application

5. A workstation crawls as soon as the user opens several apps. What does Sofiane target?

The RAM, the machine's workspace The SSD, to speed up file opening The screen, often responsible for slowdowns The keyboard, to replace with a new model

A slowdown with many apps open suggests a lack of RAM; an SSD mainly speeds up file opening.

0.2 · Arbitration

6. The SME's file server must never go down. What reflex does Sofiane apply?

Replace it with a more powerful workstation Double the power supplies and disks (redundancy) Restart it every morning as a precaution Disconnect it from the network at night

A server aims for availability: redundancy (power supplies, disks) avoids a single point of failure.

0.3 · Recall

7. What is the operating system layer for?

Replacing faulty hardware Blocking computer viruses Linking hardware and applications Creating websites for the company

The OS manages memory, files, processes and peripherals, and offers a uniform way to use the machine.

0.3 · Application

8. The SME's web server runs Linux. Why is that common?

Because Linux does not manage files Because Linux only exists on servers Because Linux is paid and therefore reliable Because Linux is free, stable and secure

Servers value stability, efficiency, security and cost — strengths of Linux, free and manageable from the command line.

0.3 · Arbitration

9. Sofiane is comfortable on Windows but discovers Linux. What does he do?

He transfers the common concepts (files, processes) He relearns everything from scratch to avoid errors He refuses Linux and stays only on Windows He waits for official training before practising

The concepts (users, permissions, files, processes) transfer from one OS to another: the generalist finds them again.

0.4 · Recall

10. How many bits are there in a byte?

Four bits Eight bits Sixteen bits A thousand bits

A byte equals 8 bits: it is the base unit of data size (KB, MB, GB, TB).

0.4 · Application

11. A line advertised at 100 Mb/s downloads slowly. What does Sofiane conclude?

The line is faulty and must be changed The provider lied about the sold bandwidth It is normal: 100 Mb/s ≈ 12 MB/s at best The downloaded file is too large

The plan is in megabits/s, the display in megabytes/s: one byte = 8 bits, so about 12 MB/s at best.

0.4 · Arbitration

12. Sofiane must explain a confusion between storage and bandwidth. What example does he give?

Storage is measured in bits per second Bandwidth is measured in bytes like a disk Both are measured in the same unit A disk is counted in GB, a line in Mb/s

Storage (quantity) is measured in bytes; bandwidth (speed) in bits per second — two distinct quantities.

What's next?

Score ≥ 80%: move on to Level 1 — support and the workstation with Sofiane.
Score between 50% and 80%: review the failed section(s) (0.1 role of IT, 0.2 hardware, 0.3 operating systems, 0.4 vocabulary), reread the course, then retake the test.
Score < 50%: reread all of level 0 applying each 48h challenge (map the IS, take inventory of a machine, transfer OS concepts, convert units) before trying again.
And after that? Keep Sofiane's maps (IS, hardware, OS, units): level 1 plugs them into daily support and the workstation.