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Consider the following policies for preventing deadlock in a system with mutually exclusive resources. I. Processes should acquire all their resources at the beginning of execution. If any resource is not available, all resources acquired so far are released II. The resources are numbered uniquely, and processes are allowed to request for resources only in increasing resource numbers III. The resources are numbered uniquely, and processes are allowed to request for resources only in decreasing resource numbers IV. The resources are numbered uniquely. A process is allowed to request only for a resource with resource number larger than its currently held resources Which of the above policies can be used for preventing deadlock?
Which Pair is not correctly matched?   Type of Resource Example A) Non-renewable Resource Natural Gas B) Natural Resource Water C) Biotic Resource Forest D) Ubiquitous Resource Copper
Which of the following are covered under the scope of human resource management?
1. Forecasting human resource needs
2. Replacement planning
3. Human resource dynamics
4. Human resource development planning
5. Human resource audit
Select the correct answer:
Which of the following statement is true?
1. Human resource management is a strategic management function.
2. Under Human resource management employee is treated as a resource.
3. Human resource management is the management of employee's skills talents and abilities.
4. Human resource management function is treated as only an auxiliary.
Consider a computer system with multiple shared resource types, with one instance per resource type. Each instance can be owned by only one process at a time. Owning and freeing of resources are done by holding a global lock (L). The following scheme is used to own a resource instance: function OWNRESOURCES(Resource R) Acquire lock L / / a global lock if R is available then Acquire R Release lock L else if R is owned by another process P then Terminate P, after releasing all resources owned by P Acquire R Restart P Release lock L end if end if end function Which of the following choice(s) about the above scheme is/are correct?
Two statements are given followed by four conclusions numbered I, II, III and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: I. Some forms are open ended. II. All close ended are forms. Conclusions: I. No open ended are forms. II. Some close ended are open ended. III. No forms are close ended. IV. All open ended are close ended.
Read statements A and B on resources and identify which resource is being referred. A. Natural substances become resources only when their original form is changed. B. Technology is both an example of this resource, as well as an important factor for generating more of this resource. Choose the correct option.
In a database system, unique timestamps are assigned to each transaction using Lamport’s logical clock. Let TS(T1) and TS(T2) be the timestamps of transactions T1 and T2 respectively. Besides, T1 holds a lock on the resource R, and T2 has requested a conflicting lock on the same resource R. The following algorithm is used to prevent deadlocks in the database system assuming that a killed transaction is restarted with the same timestamp. If TS(T2) < TS(T1) then T1 is killed else T2 waits. Assume any transaction that is not killed terminates eventually. Which of the following is TRUE about the database system that uses the above algorithm to prevent deadlocks?
A user logs into a remote computer using (i) and then transfers his file to his own computer using (ii) and finally emails it using (iii). What could (i), (ii), (iii), respectively, be?
Shilpa and Radhika started walking from two different points, 'A' and 'B', respectively. Shilpa walks 4 km North, turns to the East and walks 6 km, again turns to the North and walks 8 km, and finally turns to the East and walks 10 km to reach point 'C'. Similarly, Radhika walks 4 km North, and turns to the West and walks 6 km, and finally turns to the North and walks 8 km and meets Shilpa at point 'C'. What is the shortest distance between Shilpa's and Radhika's starting points?