Multiple Choice Questions 6
Question1
The permanent blocking of a set of processes that either compete for system resources or communicate with each other is called:
选择一个答案
a. Starvation |
b. All of the above |
c. Prioritization |
d. Deadlock √ |
死锁是一组竞争系统资源或互相通信的竞争间相互的"永久"阻塞
Question2
In deadlocked process recovery, selection criteria for choosing a particular process to abort or rollback includes designating the process with the:
选择一个答案
a. Least total resources allocated so far |
b. Lowest priority |
c. All of the above √ |
d. Most estimated time remaining |
中文P196 死锁检测后恢复过程对“牺牲”进程的选择
Question3
One approach to an integrated strategy for dealing with deadlocks involves the implementation of:
选择一个答案
a. Process rollbacks |
b. Virtual memory |
c. Resource classes √ |
d. None of the above |
综合死锁策略：资源分类
Question4
The Dining Philosopher’s Problem is a standard test case for evaluating approaches to implementing:
选择一个答案
a. Synchronization √ |
b. Starvation |
c. All of the above |
d. Deadlock |
哲学家进餐问题是评价同步方法的一个测试标准
Question5
A software mechanism that informs a process of the occurrences of asynchronous events in UNIX are called:
选择一个答案
a. Pipes |
b. Messages |
c. Signals √ |
d. All of the above |
信号是用于通知发生一个同步事件的软件机制
Question6
Thread synchronization primitives supported by Solaris include:
选择一个答案
a. Condition variables |
b. Semaphores |
c. All of the above √ |
d. Mutual exclusion (mutex) locks |
互斥锁、信号量、多读者单写者锁、条件变量
Question7
The family of synchronization objects implemented by W2K include:
选择一个答案
a. Mutex objects |
b. Event objects |
c. All of the above √ |
d. Semaphore objects |
事件、互斥、信号量、可等待的计时器
Question8
All deadlocks involve conflicting needs for resources by:
选择一个答案
a. Three or more processes |
b. One or more processes |
c. None of the above |
d. Two or more processes √ |
两个或多个进程资源需求冲突
Question9
A resource that can be created and destroyed is called a:
选择一个答案
a. Reusable resource |
b. Producible resource |
c. Consumable resource √ |
d. All of the above |
可重用资源 VS 可消费资源
Question10
An example of a consumable resource is the following:
选择一个答案
a. All of the above |
b. Main Memory |
c. Messages √ |
d. Printers |
可创建可销毁的信息资源
Question11
A condition of policy that must be present for a deadlock to be possible is:
选择一个答案
a. Mutual exclusion |
b. No preemption |
c. All of the above √ |
d. Hold and wait |
三个必要条件
Question12
A direct method of deadlock prevention is to prevent the occurrence of:
选择一个答案
a. Hold and wait |
b. All of the above |
c. Circular wait √ |
d. Mutual exclusion |
死锁预防的直接法
Question13
In the Resource Allocation Denial approach to Deadlock Avoidance, a safe state is defined as one in which:
选择一个答案
a. At least one potential process sequence does not result in a deadlock √ |
b. None of the above |
c. All potential process sequences do not result in a deadlock: |
d. Several potential process sequences do not result in a deadlock: |
一条安全道路便可
Question14
A conservative strategy for dealing with deadlocks that involves limiting access to resources and imposing restrictions on processes is called:
选择一个答案
a. None of the above |
b. Deadlock Prevention √ |
c. Deadlock Detection |
d. Deadlock Avoidance |
资源预防