Health Safety and Security at Workplace

A payment PIN is confidential and should not be disclosed to callers, even when they create urgency or claim to be protecting an account. Such a request may be a fraud attempt. End the call, avoid using contact details supplied by the caller, and verify through the bank or payment service’s official app, website, or helpline. Therefore, D is safest.

Checking the recipient name, amount, and identifying details before confirming a payment helps ensure that money is going to the intended person or organization. It can reveal a wrong account, altered amount, or impersonation attempt. The check does not speed up hardware; it protects the transaction from avoidable mistakes and fraud.

A digital payment receipt records details that help identify and verify a transaction. The amount shows how much money was involved, the date or time places the transaction in sequence, and the receiver or merchant details show where it was sent. These records can help resolve mistakes or disputes. Mouse colour, chair height, and monitor brightness provide no transaction evidence.

Public Wi-Fi is shared and may be poorly configured, impersonated, or monitored. Banking involves highly sensitive credentials and financial information, so it is safer to use mobile data or a trusted, secured network instead. Public Wi-Fi is not automatically dangerous in every case, but avoiding sensitive transactions on it is a prudent school-level safety rule.

A camera can unintentionally reveal names, addresses, marks, financial papers, or other private information to meeting participants or recordings. Move the documents, use a suitable background, or turn off the camera when video is not needed. Sharing or reading the documents increases exposure, and speaking a password is never an appropriate solution.

Deleting a post removes it from the original account or platform view, but it cannot guarantee that every copy disappears. People may have viewed it, taken a screenshot, downloaded it, or shared it elsewhere before deletion. Search caches or reposts may also preserve its spread. This lasting trace is why users should think carefully before posting personal or harmful content.

A photograph can identify a person and may reveal their location, activity, or personal circumstances. Sharing it with a group without consent can interfere with that person's privacy and may cause embarrassment or harm. Asking permission first, considering the audience, and removing sensitive details are responsible digital practices.

A normal shutdown gives applications and the operating system time to save information, close files, and stop processes in an orderly way. Directly removing power can lose unsaved work and, in some situations, interrupt storage operations or cause file-system problems. Shutdown is therefore safer for routine use, although emergency power loss can still occur.

Long computer use is safer when the screen is positioned comfortably, the back and neck are supported, the feet are stable, and the user takes regular short breaks to look away and move. Sitting too close, ignoring chair height, or working continuously can increase eye, neck, shoulder, and back strain.

Using several character types increases the number of possible combinations and makes simple guessing or automated cracking harder, especially when the password is also long and unique. Complexity alone is not enough: a long memorable passphrase can be strong too. The password should never be shared or reused across important accounts.

An urgent reward link from an unknown sender is a common warning sign of phishing. Opening the message or clicking its link may lead to a fake login page, malware, or a request for sensitive information. Do not respond; verify independently through a known official channel and report or delete the message according to local rules.

Two-factor authentication requires a password plus another independent proof of identity, such as a code from an authenticator, a security key, or a suitable biometric factor. If a password is stolen, the second factor can still block access. It does not change colors, disable the internet, or delete files.

Malware can arrive through unsafe downloads, deceptive links, infected removable devices, or untrusted applications. Using reputable sources, keeping the operating system and security software updated, checking downloads, and avoiding suspicious links reduce exposure. No single measure guarantees complete safety, but the combination in option B is the most responsible prevention.

A firewall applies configured rules to network traffic entering or leaving a device or network. It can permit trusted connections and block or restrict suspicious or unauthorized ones, helping reduce unwanted access. A firewall is one layer of security, not a complete replacement for updates, strong authentication, antivirus protection, and careful user behavior.

A Local Area Network connects devices within a limited geographical area such as a room, laboratory, school building, or office. Computers in one school laboratory fit this definition. The global Internet and networks spanning countries cover much larger areas and are examples of wide-area or global networking rather than a single LAN.

A digital footprint is the record or trace created by a person's online posts, messages, searches, and other activities. Before sharing, considering who may see the content, how long it may remain, and what harm it could cause helps protect privacy, safety, and reputation. Publicly exposing secrets or clicking suspicious links increases risk.

Privacy settings let a user manage the visibility of profile details, posts, photos, location, and other information on a digital service. They can limit an audience to selected people or contacts, although no setting should be treated as a guarantee against every screenshot or misuse. Hardware battery, keyboard color, and printer ink are unrelated functions.

Cloud storage keeps files on remote servers managed through an online service. With suitable access, a user can reach those files from different devices or locations through the Internet. This benefit depends on connectivity and account permission, and it does not remove every risk; strong authentication, access control, and independent backups may still be needed.

Data may be lost because of accidental deletion, hardware failure, theft, malware, or an incorrect change. A regular backup creates a separate recoverable copy, so important work can be restored after such an event. Backups should be stored separately, updated often enough for the work, and occasionally checked to ensure restoration is possible.

Before sending an attachment, verify the recipient, file name, contents, and size. This prevents accidental disclosure, wrong-file delivery, and avoidable delivery problems. Sensitive information should be shared only with authorized people and protected by suitable means; passwords should never be exposed in the message. The other actions increase privacy or security risks.