Cyber Security

Respuesta correcta: D) log out of

• A) log onTo enter.
• B) set upTo create.
• C) back upTo make a copy.
• D) log out ofCorrect. To exit or disconnect from an account.

Respuesta correcta: C) breaks into

• A) breaks outTo escape.
• B) breaks upTo end a relationship.
• C) breaks intoCorrect. To enter a computer system illegally.
• D) breaks downTo stop working.

Respuesta correcta: C) back / up

• A) keep / upTo stay informed.
• B) put / offTo postpone.
• C) back / upCorrect. To make a copy of digital information.
• D) fill / inTo complete a form.

Respuesta correcta: B) had been / wouldn't have given

• A) are / wouldn't give'Are ... wouldn't give' is a mixed conditional; it would describe a habit that still holds, not the specific past mistake being recounted.
• B) had been / wouldn't have givenCorrect. Third Conditional for a past digital mistake.
• C) were / won't give'Were ... won't give' mixes a hypothetical past with a future consequence, so the two halves belong to different conditionals.
• D) are / don't give'Are ... don't give' is the zero conditional for a general truth, which loses the past event the sentence describes.

Respuesta correcta: D) carry / out

• A) go / throughTo examine.
• B) set / offTo trigger.
• C) bring / aboutTo cause to happen.
• D) carry / outCorrect. To perform or complete a task (like installation).

Respuesta correcta: C) could be / use

• A) will be / used'Will be' states the theft as a certainty, but the sentence warns about a risk that may or may not happen.
• B) was / used'Was' points to a completed past event and 'used' is past tense, so the sentence would describe something that already happened rather than a general risk.
• C) could be / useCorrect First Conditional with modal for possibility.
• D) would be / use'Would be' belongs to the second conditional for a hypothetical case, not to a general warning about behaviour that could happen to anyone.

Respuesta correcta: B) went through / click on

• A) looked up / click'Looked up' means to consult a reference or check a definition, not to examine a message from end to end.
• B) went through / click onCorrect. To examine carefully + tech phrasal 'click on'.
• C) broke into / look after'Broke into' means to enter a place or system illegally, and 'look after' means to care for someone, so neither fits either blank.
• D) set up / log on'Set up' means to arrange or install something, and 'log on' is to sign in with a password, so the pair does not describe examining an email.

Respuesta correcta: A) set up / keep

• A) set up / keepCorrect. To establish/install + to prevent.
• B) set off / let'Set off' means to set something alight or to start a journey, and 'let' would permit the hackers rather than stop them.
• C) brought up / stop'Brought up' means to raise a topic, and 'stop' is too general for the specific function of a firewall.
• D) broke down / prevent'Broke down' means to stop working or to fall apart, the opposite of installing something that is meant to protect the server.

Respuesta correcta: D) implement / will remain

• A) implement / would remain'Would remain' is the second conditional for a hypothetical, whereas 'unless' here introduces a condition that is expected to hold.
• B) implemented / will remain'Implemented' is past tense, so it would say the company already installed it rather than stating the ongoing requirement.
• C) had implemented / remained'Had implemented ... remained' is a past-to-past pair that fits the third conditional, not an 'unless' clause about current practice.
• D) implement / will remainCorrect First Conditional with 'unless'.

Respuesta correcta: D) using / can

• A) use / will'Only by' is followed by a gerund, since 'by' takes a noun or an -ing form, so the bare 'use' is wrong.
• B) using / -With 'only' first, the subject and auxiliary have to invert, so the clause cannot end without an auxiliary such as 'can'.
• C) used / did'Used' is a past participle and 'did' would be needed for an inversion of the past, which is not the form this sentence requires.
• D) using / canCorrect inversion with 'Only by'.

Respuesta correcta: C) shouldn't have left

• A) must not leave'Must not leave' can only describe a rule for the present or future, so it cannot criticise the past act described in the sentence.
• B) can't have leftContradicts the result (it happened).
• C) shouldn't have leftCorrect. Past criticism.
• D) might not have left'Might not have left' leaves open the possibility that he did not leave his computer unattended, which contradicts the semicolon clause that states it happened.

Respuesta correcta: C) had been / wouldn't be suffering

• A) was / wouldn't suffer'Was ... wouldn't suffer' is the second conditional for a hypothetical in the past, but the sentence describes a consequence that is still going on today.
• B) had been / wouldn't have suffered'Wouldn't have suffered' closes the third conditional with a finished past result, whereas the damage here is an ongoing present condition.
• C) had been / wouldn't be sufferingCorrect Mixed Conditional (Past action -> Present ongoing result).
• D) were / didn't suffer'Were ... didn't suffer' is a second conditional with a negative result and does not convey a situation that is still ongoing.