CBT CBT Technology Infrastructure and Innovations 1 — Questions and Answers
Question 1: What is a 'lockdown browser' used for in CBT environments?
- To speed up internet access during the exam
- To prevent candidates from accessing unauthorized websites or applications during a remotely proctored exam (Correct answer)
- To automatically grade open-ended responses
- To record candidate keystrokes for adaptive scoring
Correct answer: To prevent candidates from accessing unauthorized websites or applications during a remotely proctored exam
A lockdown browser restricts the test-taker's computer to the exam interface, blocking access to browsers, applications, and external sites to maintain security.
Question 2: Which network configuration is critical for ensuring reliable CBT delivery at a US testing center?
- Dial-up internet with a backup modem
- Redundant high-speed internet connections with automatic failover (Correct answer)
- A single shared Wi-Fi access point for all workstations
- Candidate personal hotspots as the primary connection
Correct answer: Redundant high-speed internet connections with automatic failover
Redundant internet with failover ensures uninterrupted exam delivery even if a primary connection fails during a live testing session.
Question 3: What does 'content encryption' mean in the context of CBT item delivery?
- Questions are displayed in a foreign language
- Exam questions are encoded so they cannot be intercepted or read if the data stream is captured (Correct answer)
- Only registered candidates can see question graphics
- The exam timer is hidden from candidates
Correct answer: Exam questions are encoded so they cannot be intercepted or read if the data stream is captured
Encrypting content during transmission (e.g., via TLS/SSL) protects question integrity by making intercepted data unreadable to unauthorized parties.
Question 4: What is the primary role of a 'test delivery system' (TDS) in a CBT platform?
- To write and edit exam questions
- To manage the secure presentation of questions to candidates and capture their responses (Correct answer)
- To compute scaled scores and generate reports
- To enroll candidates and process exam fees
Correct answer: To manage the secure presentation of questions to candidates and capture their responses
The TDS is the runtime engine that authenticates candidates, serves items, tracks responses, enforces time limits, and submits exam data.
Question 5: Which technology enables a candidate to take a proctored CBT exam from home in the US?
- Virtual reality headsets
- Remote online proctoring (ROP) using webcam, microphone, and AI monitoring software (Correct answer)
- Telephone-based verification systems
- Paper score sheets mailed after the exam
Correct answer: Remote online proctoring (ROP) using webcam, microphone, and AI monitoring software
Remote online proctoring uses webcam feeds, AI behavioral analysis, and human proctors to supervise candidates in their own environment.
Question 6: What is a 'thin client' workstation as used in some CBT testing centers?
- A lightweight laptop with no GPU
- A low-cost terminal that streams the exam interface from a central server with no local processing or storage (Correct answer)
- A mobile tablet used for portable testing
- A workstation with minimal RAM but a fast SSD
Correct answer: A low-cost terminal that streams the exam interface from a central server with no local processing or storage
Thin clients have no local storage or significant processing power; all exam logic runs on a secure server, reducing the risk of data theft from the endpoint.
CBT CBT Technology Infrastructure and Innovations 1
What is a 'lockdown browser' used for in CBT environments?