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SIA CCTV Operator Practice Test 2026：第4套练习测试

SIA CCTV Operator Practice Test 练习测试第4套（共5套）：再练25道题，附答案和解释。

  • 保安
  • 英国
  • 119道题
  • 核对于2026年10月10日

  1. 第1题，共25题

    In the UK, a fire extinguisher with a black label or band contains:
    显示答案

    答案: D. Carbon dioxide (CO2)

    All extinguishers have red bodies with a coloured band: red for water, cream for foam, blue for dry powder, black for CO2 and yellow for wet chemical.

  2. 第2题，共25题

    Which right in the Human Rights Act is most affected when a security operative detains someone?
    显示答案

    答案: A. The right to liberty and security (Article 5)

    Detaining someone takes away their liberty. Any arrest must be lawful, or it may breach Article 5 and be false imprisonment.

  3. 第3题，共25题

    Which group of people is most likely to be vulnerable at a venue?
    显示答案

    答案: C. Someone very drunk and alone

    Vulnerability can come from alcohol or drugs, being alone, age, mental health or being targeted by others.

  4. 第4题，共25题

    What colour band is on a foam extinguisher?
    显示答案

    答案: A. Cream

    Foam extinguishers have a cream band. They are used on Class A and Class B fires.

  5. 第5题，共25题

    Which class of fire involves solid materials such as wood, paper and textiles?
    显示答案

    答案: B. Class A

    Class A is solids, Class B flammable liquids, Class C flammable gases, Class D metals and Class F cooking oils and fats.

  6. 第6题，共25题

    How many terrorism threat levels does the UK use?
    显示答案

    答案: A. 5

    The levels are low, moderate, substantial, severe and critical.

  7. 第7题，共25题

    Under data protection law, what is "personal data"?
    显示答案

    答案: A. Information about an identifiable living person

    Personal data includes names, images, CCTV footage and notes that can identify someone.

  8. 第8题，共25题

    Under section 24A of PACE, when may a non-police officer make an arrest?
    显示答案

    答案: A. When a police officer cannot reasonably make the arrest instead and it is necessary for a listed reason

    The arrest must be necessary, for example to stop the person causing injury or damage or making off, and it must not be reasonably practicable for a constable to do it.

  9. 第9题，共25题

    What does a blue circular safety sign mean?
    显示答案

    答案: A. Something you must do, such as wear protective equipment

    Blue signs are mandatory. Red signs show prohibitions or fire equipment, yellow signs warn of hazards, and green signs show safe conditions such as escape routes.

  10. 第10题，共25题

    Which sign may show that a colleague is struggling after a traumatic incident?
    显示答案

    答案: B. Trouble sleeping, flashbacks or avoiding the place where it happened

    These can be signs of stress or post-traumatic stress. Colleagues should be encouraged to seek support.

  11. 第11题，共25题

    What is the standard of proof in a criminal court?
    显示答案

    答案: A. Beyond reasonable doubt

    The prosecution must prove guilt beyond reasonable doubt. Civil cases use the lower standard of the balance of probabilities.

  12. 第12题，共25题

    Which is a rule for keeping a pocket notebook?
    显示答案

    答案: B. Make entries in time order and leave no blank spaces

    Entries should be in order, in ink, with no gaps or torn-out pages, so nothing can be added later.

  13. 第13题，共25题

    Which of these is a protected characteristic under the Equality Act 2010?
    显示答案

    答案: C. Religion or belief

    Religion or belief is one of the nine protected characteristics. Refusing service because of one of them can be unlawful discrimination.

  14. 第14题，共25题

    What is "county lines"?
    显示答案

    答案: C. Gangs using children and vulnerable people to move and sell drugs across areas

    Security operatives should watch for signs of exploitation, such as young people out late with unexplained money or phones, and report concerns.

  15. 第15题，共25题

    Which extinguisher is suitable for a fire in electrical equipment?
    显示答案

    答案: D. Carbon dioxide (CO2)

    CO2 does not conduct electricity and leaves no residue. Never use water on electrical fires.

  16. 第16题，共25题

    In the 4 Cs approach to a suspicious item, what does "Clear" mean?
    显示答案

    答案: A. Move people away from the item to a safe distance

    The 4 Cs are Confirm, Clear, Communicate and Control. Never touch or move the item.

  17. 第17题，共25题

    What is one of the SIA's main functions?
    显示答案

    答案: C. Licensing individuals who work in designated security activities

    The SIA licenses individuals, runs the Approved Contractor Scheme and works to raise standards in the industry.

  18. 第18题，共25题

    In the HOT principle for unattended items, what does the H stand for?
    显示答案

    答案: A. Hidden

    HOT asks whether the item is Hidden, Obviously suspicious, and not Typical of what you would expect in that place.

  19. 第19题，共25题

    In England and Wales, under section 24A of the Police and Criminal Evidence Act 1984, a person who is not a police officer may arrest without a warrant for:
    显示答案

    答案: D. An indictable offence

    Section 24A powers apply only to indictable offences, such as theft or assault causing injury, and only when further conditions are met.

  20. 第20题，共25题

    When should an incident report be written?
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    显示答案

    答案: D. As soon as possible after the incident

    Reports written soon after an event are more accurate and carry more weight as evidence.

  21. 第21题，共25题

    Which law covers fire safety in most non-domestic premises in England and Wales?
    显示答案

    答案: B. The Regulatory Reform (Fire Safety) Order 2005

    The Fire Safety Order applies in England and Wales. Scotland has the Fire (Scotland) Act 2005, and Northern Ireland has its own fire safety laws.

  22. 第22题，共25题

    Which is a barrier to effective communication?
    显示答案

    答案: A. Loud background noise

    Noise, language differences, intoxication and strong emotions can all stop a message being understood.

  23. 第23题，共25题

    Which is an example of non-verbal communication?
    显示答案

    答案: B. Facial expressions and body posture

    Non-verbal communication includes body language, gestures, facial expressions and eye contact. It can say more than words.

  24. 第24题，共25题

    In Scotland, what is the legal basis for an arrest by a private citizen?
    显示答案

    答案: C. Common law

    PACE does not apply in Scotland. A citizen's arrest there is based on common law, generally for a serious crime the person has seen being committed.

  25. 第25题，共25题

    Why should fire doors be kept closed?
    显示答案

    答案: A. To slow the spread of fire and smoke

    Fire doors hold back fire and smoke so people have time to escape. Wedging them open defeats their purpose.

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