Practice Pakistan's most useful MCQs for competitive exams

A chemical plant system may detect excessive pressure and open a relief valve to reduce these pressures before an explosion occurs. What kind of dependability and security issue the example states ?

• (A)  Hazard avoidance
• (B)  Damage limitation
• (C)  Hazard detection
• (D)  Hazard detection and removal

Answer

Submitted By :Ali Uppal

What is the term for development process organised such that faults in the system are detected and repaired before delivery to the customer ?

• (A)  Fault Avoidance
• (B)  Fault detection
• (C)  Fault tolerance
• (D)  None of the mentioned

Answer

Submitted By :Ali Uppal

Which of the following is a Strategy to achieve Software diversity ?

• (A)  Different programming languages
• (B)  Different design methods and tools
• (C)  Explicit specification of different algorithms
• (D)  All of the mentioned

Answer

Submitted By :Ali Uppal

Which process characteristic with respect to Dependability Engineering is mentioned by the statement: “The process should be understandable by people apart from process participants” ?

• (A)  Diverse
• (B)  Documentable
• (C)  Auditable
• (D)  None of the mentioned

Answer

Submitted By :Ali Uppal

Which of the following examples does not involve dependability engineering ?

• (A)  Medical Systems
• (B)  Power Systems
• (C)  Library Management
• (D)  Telecommunications

Answer

Submitted By :Ali Uppal

Consider a case where the failure of the system causes damage to the system itself or it data. What type of failure is being described here ?

• (A)  Loss of service
• (B)  Incorrect service delivery
• (C)  System/data corruption
• (D)  None of the mentioned

Answer

Submitted By :Ali Uppal

At which stage of risk analysis specification, the additional security requirements take account of the technologies used in building the system and system design and implementation decisions ?

• (A)  Preliminary risk analysis
• (B)  Life-cycle risk analysis
• (C)  Operational risk analysis
• (D)  All of the mentioned

Answer

Submitted By :Ali Uppal

Which reliability metric sets out the probable number of system failures that are likely to be observed relative to a certain time period ?

• (A)  POFOD
• (B)  ROCOF
• (C)  AVAIL
• (D)  None of the mentioned

Answer

Submitted By :Ali Uppal

Which reliability requirements are concerned with maintaining copies of the system ?

• (A)  Checking requirements
• (B)  Recovery requirements
• (C)  Redundancy requirements
• (D)  Ambiguous requirements

Answer

Submitted By :Ali Uppal

Which of the following is not a functional reliability requirement for a system ?

• (A)  Checking requirements
• (B)  Recovery requirements
• (C)  Redundancy requirements
• (D)  Ambiguous requirements

Answer

Submitted By :Ali Uppal