What technique involves delaying instruction execution to resolve data hazards?
A) Data Forwarding
B) Register Renaming
C) Stalling
D) Branch Prediction
Answer: C
How does data forwarding help in managing data hazards?
A) By delaying the execution of instructions
B) By directly passing data between pipeline stages
C) By predicting branch outcomes
D) By increasing the number of pipeline stages
Answer: B
What is the primary goal of branch prediction in a pipelined processor?
A) To handle structural hazards
B) To reduce the penalties of branch mis-prediction
C) To manage data hazards
D) To increase the number of functional units
Answer: B
Which technique helps to minimize the impact of pipeline stalls due to data hazards?
A) Data Forwarding
B) Resource Duplication
C) Register Renaming
D) Branch Prediction
Answer: A
What is the purpose of implementing stalling in a pipeline?
A) To resolve control hazards
B) To handle data hazards by delaying instructions
C) To avoid structural conflicts
D) To improve branch prediction accuracy
Answer: B
How does branch prediction improve processor performance?
A) By handling data dependencies
B) By avoiding pipeline stalls from incorrect branch decisions
C) By increasing the number of execution units
D) By managing structural hazards
Answer: B
Which method can be used to resolve Write-After-Write (WAW) hazards?
A) Data Forwarding
B) Branch Prediction
C) Stalling
D) Register Renaming
Answer: D
What is the effect of data forwarding on pipeline execution?
A) It increases pipeline stages
B) It allows data to be used immediately after it is produced
C) It delays instruction execution
D) It predicts future branches
Answer: B
What technique is employed to handle a Read-After-Write (RAW) hazard?
A) Branch Prediction
B) Register Renaming
C) Data Forwarding
D) Stalling
Answer: C
Which hazard management technique involves temporarily holding up instructions in a pipeline?
A) Data Forwarding
B) Stalling
C) Register Renaming
D) Branch Prediction
Answer: B
What role does Register Renaming play in hazard management?
A) It avoids structural hazards by duplicating resources
B) It handles data hazards by renaming registers to avoid conflicts
C) It resolves control hazards by predicting branches
D) It improves pipeline performance by increasing stages
Answer: B
What technique reduces the delay caused by incorrect branch predictions?
A) Data Forwarding
B) Branch Prediction
C) Register Renaming
D) Stalling
Answer: B
How does increasing the number of pipeline stages impact control hazards?
A) It reduces the need for data forwarding
B) It improves branch prediction accuracy
C) It can increase the likelihood of control hazards
D) It resolves Write-After-Write (WAW) hazards
Answer: C
What is the primary strategy to handle structural hazards in pipelined processors?
A) Data Forwarding
B) Stalling
C) Resource Duplication
D) Register Renaming
Answer: C
How does stalling affect instruction throughput in a pipeline?
A) It increases throughput by reducing hazards
B) It decreases throughput by delaying instruction execution
C) It has no impact on throughput
D) It improves hazard resolution efficiency
Answer: B
Which technique is used to ensure that instructions do not interfere with each other due to data dependencies?
A) Stalling
B) Data Forwarding
C) Branch Prediction
D) Resource Duplication
Answer: B
What is the main purpose of using a Branch Target Buffer (BTB)?
A) To manage data hazards
B) To predict the target address of branches and reduce control hazards
C) To duplicate hardware resources
D) To forward data between pipeline stages
Answer: B
Which technique helps to resolve control hazards by speculatively executing instructions?
A) Data Forwarding
B) Stalling
C) Branch Prediction
D) Register Renaming
Answer: C
How does Register Renaming address Write-After-Read (WAR) hazards?
A) By delaying the execution of instructions
B) By providing unique register identifiers to avoid conflicts
C) By predicting branch outcomes
D) By forwarding data between stages
Answer: B
What is a common way to handle hazards involving functional unit resource conflicts?
A) Data Forwarding
B) Stalling
C) Resource Duplication
D) Branch Prediction
Answer: C
What technique helps to avoid delays caused by data dependencies between instructions?
A) Data Forwarding
B) Stalling
C) Register Renaming
D) Branch Prediction
Answer: A
Which hazard management technique uses history tables to improve branch prediction?
A) Data Forwarding
B) Register Renaming
C) Branch Prediction
D) Resource Duplication
Answer: C
How does the use of a pipeline interlock help in managing data hazards?
A) By forwarding data between stages
B) By delaying instruction execution to resolve dependencies
C) By predicting branch outcomes
D) By renaming registers
Answer: B
What is the purpose of speculative execution in hazard management?
A) To avoid data forwarding
B) To execute instructions before branch decisions are confirmed
C) To resolve resource conflicts
D) To handle control hazards
Answer: B
Which technique is most effective for handling conflicts over the use of functional units?
A) Data Forwarding
B) Resource Duplication
C) Register Renaming
D) Stalling
Answer: B
What does the term ‘pipeline interlock’ refer to?
A) A method for forwarding data
B) A mechanism to delay instructions and resolve hazards
C) A technique for branch prediction
D) A way to duplicate hardware resources
Answer: B
Which hazard management technique involves holding instructions until the required data is available?
A) Data Forwarding
B) Branch Prediction
C) Register Renaming
D) Stalling
Answer: D
How does increasing the number of execution units help in managing structural hazards?
A) By allowing more parallel execution and reducing conflicts
B) By forwarding data more efficiently
C) By predicting branches more accurately
D) By renaming registers
Answer: A
What role does a Branch History Table (BHT) play in pipeline hazard management?
A) It forwards data between pipeline stages
B) It helps in predicting the direction of branches
C) It resolves data hazards by renaming registers
D) It duplicates hardware resources
Answer: B
What is the impact of using data forwarding on pipeline latency?
A) It increases latency by adding stages
B) It reduces latency by providing immediate data access
C) It has no effect on latency
D) It improves control hazard resolution
Answer: B
Which hazard is specifically managed by using a reservation station?
A) Control Hazard
B) Structural Hazard
C) Data Hazard
D) Resource Hazard
Answer: C
What is the effect of branch prediction accuracy on pipeline performance?
A) It has no effect on performance
B) It improves performance by reducing pipeline stalls
C) It increases the number of pipeline stages
D) It addresses structural hazards
Answer: B
How does Register Renaming prevent conflicts in a pipeline?
A) By delaying the execution of instructions
B) By providing unique identifiers for registers to avoid conflicts
C) By forwarding data between pipeline stages
D) By predicting branch outcomes
Answer: B
Which technique helps to manage the delays caused by branch mis-predictions?
A) Data Forwarding
B) Stalling
C) Branch Prediction
D) Resource Duplication
Answer: C
How does using multiple functional units help in managing structural hazards?
A) By forwarding data between stages
B) By executing more instructions in parallel and reducing conflicts
C) By predicting branch outcomes
D) By renaming registers
Answer: B
What is a common solution for handling delays due to Read-After-Write (RAW) hazards?
A) Data Forwarding
B) Stalling
C) Branch Prediction
D) Resource Duplication
Answer: A
How does stalling affect the efficiency of a pipelined processor?
A) It increases efficiency by reducing hazards
B) It decreases efficiency by delaying instruction execution
C) It has no effect on efficiency
D) It improves hazard resolution
Answer: B
Which technique is used to avoid data hazards caused by simultaneous access to the same resource?
A) Register Renaming
B) Data Forwarding
C) Resource Duplication
D) Branch Prediction
Answer: C
What technique involves executing instructions before the final branch outcome is known?
A) Data Forwarding
B) Speculative Execution
C) Register Renaming
D) Resource Duplication
Answer: B
How does branch prediction impact pipeline stalls?
A) It reduces stalls by predicting branch outcomes early
B) It increases stalls due to prediction errors
C) It has no effect on stalls
D) It helps in managing data hazards
Answer: A
What is the function of a data forwarding path in a pipeline?
A) To resolve structural hazards
B) To pass data directly between stages to avoid delays
C) To predict branch outcomes
D) To rename registers
Answer: B
Which technique helps to resolve conflicts over the use of the same register?
A) Data Forwarding
B) Register Renaming
C) Stalling
D) Branch Prediction
Answer: B
What is the impact of speculative execution on pipeline performance?
A) It increases the number of pipeline stages
B) It improves performance by reducing delays from branch mis-predictions
C) It has no impact on performance
D) It helps in handling data hazards
Answer: B
How does a Branch Target Buffer (BTB) improve control hazard management?
A) By forwarding data between stages
B) By predicting the target address of branches
C) By renaming registers
D) By increasing the number of execution units
Answer: B
Which hazard management technique involves using a history of branch outcomes to predict future branches?
A) Data Forwarding
B) Stalling
C) Branch Prediction
D) Register Renaming
Answer: C
What is a common approach to handle delays caused by data dependencies?
A) Data Forwarding
B) Register Renaming
C) Resource Duplication
D) Stalling
Answer: A
How does the use of multiple branches prediction strategies affect pipeline performance?
A) It decreases prediction accuracy
B) It improves prediction accuracy and reduces pipeline stalls
C) It has no effect on performance
D) It increases the number of pipeline stages
Answer: B
Which technique helps to manage pipeline stalls caused by control hazards?
A) Data Forwarding
B) Stalling
C) Branch Prediction
D) Resource Duplication
Answer: C
How does Register Renaming help to resolve data hazards involving multiple writes to the same register?
A) By increasing the number of pipeline stages
B) By renaming registers to avoid conflicts
C) By forwarding data between stages
D) By predicting branch outcomes
Answer: B
What effect does a well-designed Branch History Table (BHT) have on pipeline performance?
A) It improves branch prediction accuracy and reduces stalls
B) It has no effect on performance
C) It increases the number of pipeline stages
D) It helps in managing data hazards
Answer: A
Read More Computer Architecture MCQs
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- SET 3: Computer Architecture MCQs
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- SET 5: Computer Architecture MCQs
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