Race Conditions - CompTIA Security+ SY0-701 - 2.3

Front

What is a race condition?

Back

When two events happen nearly simultaneously and are not handled properly

Front

What makes race conditions hard to detect?

Back

Complex event interactions make them difficult to identify.

Front

Which of the following best defines TOCTOU? A timing error in system clocks, A type of memory overflow, Time of check to time of use, A user authentication method, A type of encryption algorithm

Back

Time of check to time of use

Front

When does a TOCTOU race condition occur?

Back

When a resource is changed between check and use.

Front

In the banking example, what caused the final inconsistency? Options: Network lag, User error, Improper rounding, Simultaneous operations without proper synchronization, Incorrect account settings

Back

Simultaneous operations without proper synchronization

Front

In the example, how much did each user deposit into Account B?

Back

$50

Front

What was the starting balance of Account A and Account B? Options: $50 each, $0 each, $100 each, $200 each, $150 each

Back

$100 each

Front

What happened to Account A after both users withdrew money?

Back

It appeared as $50 but was actually $0

Front

What does the acronym TOCTOU stand for?

Back

Time of Check to Time of Use

Front

Why was the Mars Rover Spirit rebooting in 2004?

Back

File system race condition