Introduction to ICT and its role in daily life

Online audio and video are transmitted as data packets through a network. If the connection is unstable or the available bandwidth is insufficient, packets may be delayed or lost; the audio stream then becomes broken or intermittent. Option A explains the symptom and is therefore correct. Keyboard colour, screen size and document language do not normally interrupt the network transmission of a teacher's voice.

The digital divide is the gap between people or communities that can access and use digital technologies and those that cannot. Here, the online-only application creates a barrier for residents without internet access, potentially excluding them from the government service. Option A is correct. Data compression and automated calculation are technical processes, while printing quality does not explain unequal access to the application.

Responsible ICT use includes information literacy: checking who produced information, whether the source is credible, whether evidence supports the claim and whether facts agree with reliable references. Using unverified material can spread errors or misinformation. Option A is correct because it names the neglected verification principle. Screen brightness, file naming and image resizing may be useful technical actions, but they do not establish whether online information is trustworthy.

The barcode scanner first captures an input, usually the product identification number. The computer then processes that number by locating the product record and price. Finally, it provides output such as the displayed price and performs the related inventory update. Thus option A follows the information-processing cycle. The other sequences reverse the order or introduce paper and deletion, which are not required in this transaction.

Cloud collaboration stores or synchronises a shared resource so that authorised users can reach the current version through the internet from different locations. Option A is correct because it combines remote access, a common updated file, and permission control. Separate disconnected copies reduce collaboration, storing a file on one device limits access, and cloud sharing does not automatically grant access to every internet user.

If a user leaves an email session active on a public computer, the next person may open private messages, read personal information, change settings, send messages, or misuse the account. Therefore, option A identifies the serious privacy and security risk. The other options are unrelated mechanical claims and do not follow from failing to sign out. Signing out, clearing the session, and avoiding saved passwords are safer practices.

In option A, software quickly organises and presents medical reports, but a qualified doctor must interpret the evidence, consider the patient, and make the diagnosis. This illustrates ICT-assisted work rather than complete replacement of human judgement. The other choices mainly describe routine calculation, display, or image capture and do not clearly include a consequential human decision after the ICT task.

Online reviews can contain useful experiences, bias, promotional content, or false claims. A careful user should compare several reviews, check whether reviewers or purchases are verified, read the product description, and consult reliable sources before deciding. Option A represents this critical evaluation. Accepting the first review or looking only at extreme comments gives an incomplete picture, while ignoring product details removes important evidence.

A digital map receives location data from positioning services and combines it with current traffic information. The user or application then compares possible routes and selects a more suitable one. Thus option A describes data-supported decision-making. The other choices ignore the role of live information or incorrectly describe the map as decoration or a static record.

Responsible digital communication requires checking whether a claim is accurate before spreading it to other people. Comparing the message with reliable sources, such as an official website or established news source, can reveal false or misleading information. Option A is correct. Making a message attractive or removing its sender does not establish truth, while forwarding without reading increases misinformation.

The governing information-flow model is input, processing, and output or action. Here, the moisture sensor first measures and supplies input. A controller compares that reading with the watering condition and processes it, then sends a control signal to operate the valve or pump. Therefore option A gives the correct sequence; the other sequences reverse or omit essential stages.

A backup is a separate recoverable copy of important information. If the main hospital record system fails and no backup exists, patient histories, test results, prescriptions, or appointment details may become inaccessible or may be permanently lost. Option A states this direct consequence. The other options are unrelated to failure of digital data storage and recovery.

A shared online document provides one central working copy, while version control records edits, identifies contributors, and allows earlier versions to be reviewed or restored. This reduces conflicting copies and makes collaboration clearer, so option A is the best solution. Emailing many copies and printing them increases confusion, while stopping editing does not solve the collaboration need.

A fake bank message is a common social-engineering or phishing risk. The safe response is to avoid the supplied contact and independently use the bank’s official website, application, branch, or verified helpline to check the claim. Option A would expose the fraud before information was shared. Immediate replies, sharing confidential numbers, or opening unknown links increase the risk.

The catalogue stores book details such as title, author, subject, and shelf location as structured digital records. A search system compares the entered query with these fields and retrieves the matching record quickly. Therefore, option A is correct. Changing book size, deleting books, or guessing without records cannot reliably locate an item.

The graph converts daily meter readings into a visual pattern. By comparing high- and low-consumption periods, the consumer can identify waste, change habits, and decide when to reduce usage. Thus option A correctly describes the ICT benefit. The graph does not generate electricity, remove the meter, or make consumption identical each day.

Effective video conferencing combines communication rules with platform controls. Participants should take turns, use the raise-hand feature when available, and mute microphones while listening. Option A is correct because it reduces overlapping speech and background noise. Increasing every volume would worsen confusion, while switching cameras or turning off information does not manage turn-taking.

Before entering payment details, a user should check that the connection uses HTTPS or another recognised secure indicator and that the web address is the genuine official domain. Option A is correct because security depends on authenticated access and protected communication, not appearance. Bright advertisements, large letters, and many images can also appear on fraudulent sites.

The platform uses information about previous answers, progress, or performance to select more suitable practice. This is a personalised learning experience because the content is adapted to an individual learner rather than delivered identically to everyone. Option A is correct. The other choices contradict the situation: data is being used, material is retained, and difficulty may vary according to need.

Passwords are authentication credentials and should be kept secret, individual, and protected. Posting them in a shared group allows unauthorised people to enter accounts and makes it difficult to identify who performed an action. Option A is correct because both access control and confidentiality are weakened. Faster communication, data organisation, and device savings do not justify exposing credentials.

Participants may reasonably expect that a meeting recording will be controlled and shared only for an explained purpose. Publishing it without notice or permission violates privacy and informed consent, so option A is correct. Compression concerns file size, network speed concerns transmission, and file naming concerns organisation; none addresses the ethical problem of unauthorised disclosure.

The shop examines recorded sales, identifies which products are demanded most often, and uses that evidence to plan future stock. This is inventory planning through data analysis, so option A is correct. The decision depends on records rather than guesswork. Message writing and product packaging may use ICT, but neither explains the analysis of sales patterns or advance ordering.

A remotely controlled lock can affect physical safety, so its account and application require layered protection. A strong unique password reduces guessing risk, while an additional authentication step provides another barrier if the password is exposed. Option A is correct. Sharing the password, avoiding updates, or using an unknown network increases the chance of unauthorised control.

The governing concept is secure and efficient digital communication. A large attachment may exceed an email service limit, whereas an authorised cloud link can provide access to the intended recipient without repeatedly transmitting the file. Permissions, expiry settings and authentication can reduce exposure. Repeated sending does not solve the size problem, putting a password in the subject exposes it, and a public platform creates unnecessary privacy and security risks.

The governing concept is the data life cycle: source information is entered, processed and then displayed as output. Because the original answer sheet is correct but the digital result is wrong, the defect most likely occurred while marks were entered, transferred, calculated or formatted. Attendance, paper colour and classroom lighting do not normally alter the marks stored or computed by the result system.