COMPRO CBT Exam common mistakes
COMPRO CBT Exam · Understand the traps and how to avoid them.
When asked which component loses its contents when the computer is switched off, the candidate picks the hard disk or SSD and describes RAM as permanent storage.
Everyday language calls phone storage 'memory', and the desktop icon for a drive is labelled with a capacity in GB, so capacity and volatility get merged into one idea.
What to do instead
Apply the power-off test to every hardware question: if the contents survive a power cut it is secondary storage (HDD, SSD, optical, flash); if they vanish it is volatile main memory (RAM). Say the test out loud before choosing an option.
The candidate deletes a desktop shortcut and states that the program or document itself has been removed from the computer.
A shortcut icon looks almost identical to the file icon, and the small arrow overlay is easy to miss on a low-resolution exam screen.
What to do instead
Check for the shortcut arrow and open File > Properties to read the target path and file size. A shortcut is only a pointer; deleting it leaves the original in place, so the correct answer is that the program or file is unaffected.
To move text onto a new page in a word processor, the candidate presses Enter repeatedly until the text drops down, and then treats those empty paragraphs as normal formatting.
It produces the right-looking page immediately, so the habit is reinforced, and the exam's formatting marks are often switched off by default.
What to do instead
Use a page break (Ctrl+Enter in most word processors) or a 'page break before' paragraph setting. Turn on formatting marks (pilcrow button) and count the paragraph marks to confirm the difference between an empty paragraph and a real page break.
The candidate writes a formula such as =B2*C2, copies it down or across, and expects every copy to keep referring to the original cells.
The formula bar shows the same characters after copying only if the reference is absolute, but the copied cells display plausible-looking results, so the silent shift is not noticed.
What to do instead
Decide before copying whether the reference must move. Anchor the parts that must stay fixed with $ (for example =B2*$C$1, or =$B2*C$1 for row-only or column-only locking). After one copy, click the new cell and read the formula bar to verify the reference did or did not shift.
The candidate totals a column that mixes real numbers with numeric-looking text (for example values imported with apostrophes, spaces or currency symbols) and accepts the smaller total that SUM returns without question.
The wrong total looks like a normal number, and text values are usually left-aligned while numbers are right-aligned, a cue that is easy to overlook on screen.
What to do instead
Compare the displayed total with a rough mental estimate and with the status-bar sum of the visible cells. Check alignment and use ISNUMBER or a COUNTA-versus-COUNT comparison; convert stored text with VALUE, Text to Columns, or by clearing leading apostrophes before summing.
The candidate describes a slide's entrance effect as a 'transition', or calls the change from one slide to the next an 'animation'.
Both features are found on the same ribbon or menu area and both produce movement, so the labels are swapped in casual use.
What to do instead
Anchor the distinction with a one-line rule: a transition happens between slides (one setting per slide); an animation happens to an object on a slide (text, picture, chart). When a question mentions 'objects on the slide', choose animation; when it mentions 'moving from slide to slide', choose transition.
The candidate puts a large list of recipients in the To or Cc field and then claims the addresses are hidden from each other.
The fields sit side by side and all accept addresses, and in a small test message every recipient already knows the others, so no visible failure occurs.
What to do instead
Memorise the field roles as visibility rules: To is the primary recipient, Cc is a visible copy, Bcc is an invisible copy. For any question about protecting addresses or sending to a distribution list, put the list in Bcc and keep your own address in To.
The candidate selects two records that share the same value, or includes a blank, as the primary key of a table.
The field looks important because it appears in every record, and 'unique' is confused with 'commonly used' or 'first column'.
What to do instead
Test any proposed key against two rules: no duplicates and no nulls, with one key per table. Choose or create a field guaranteed to be unique per record (student ID, order number) and use a separate foreign key to link to other tables.
The candidate marks a website as safe because the address begins with https and shows a padlock.
Browsers and security training emphasise the padlock, and the symbol is visually reassuring, so encryption gets confused with legitimacy.
What to do instead
Read the padlock as 'this connection is encrypted', not 'this site is honest'. Check the exact domain spelling, look for mismatched branding, urgency or credential requests, and treat HTTPS as one check among several rather than a verdict.
The candidate treats freeware as public domain, stating that it may be modified, rebranded and redistributed without permission.
'Free' is read as free of restrictions rather than free of charge, and the difference between freeware, open-source software and public domain is rarely explained in everyday use.
What to do instead
Classify by licence, not price. Freeware: no cost, rights retained by the author. Open source: source code available under a licence whose terms must be followed. Public domain: no copyright remains. When a question mentions modifying or redistributing software, look for the licence terms in the scenario before answering.