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User level threads are threads that are visible to the programmer and are unknown to the kernel. The operating system kernel supports and manages kernel level threads. Three different types of models relate user and kernel level threads. Which of the following statements is/are true ? (a) (i) The Many - to - one model maps many user threads to one kernel thread (ii) The one - to - one model maps one user thread to one kernel thread (iii) The many - to - many model maps many user threads to smaller or equal kernel threads (b) (i) Many - to - one model maps many kernel threads to one user thread (ii) One - to - one model maps one kernel thread to one user thread (iii) Many - to- many model maps many kernel threads to smaller or equal user threads
Consider the following multi-threaded code segment (in a mix of C and pseudocode), invoked by two processes P1 and P2, and each of the processes spawns two threads T1 and T2: int x = 0; // global Lock L1; // global main() { create a thread to execute foo(); // Thread T1 create a thread to execute foo(); // Thread T2 wait for the two threads to finish execution; print (x);} foo() { int y = 0; Acquire L1; x = x + 1; y = y + 1; Release L1; print (y); } Which of the following statement(s) is/are correct ?
If A indicates >; B indicates <; C indicates = ; D indicates + ; E indicates -; F indicates × ; G indicates /: then which of the following option is true?
Steps are given to draw an ellipse by loop of the thread method. Arrange the steps. i. Check whether the length of the thread is enough to touch the end of minor axis. ii. Draw two axes AB and CD intersecting at O. Locate the foci F1 and F2. iii. Move the pencil around the foci, maintaining an even tension in the thread throughout and obtain the ellipse. iv. Insert a pin at each focus-point and tie a piece of thread in the form of a loop around the pins.
Ram is playing with a thread and a brick of mass 2 Kg. He tied a thread one of its end with brick and another end with the roof. He holds the thread at 1 m below the roof and applying a force of 50 N. What is the tension that appeared in the upper part of the thread which is stick with the roof? Take (Tan 68° = 2.5; Cos 68° = 0.37; g = 10m/s2)
The keyword which indicates that a method can be accessed by only one thread at a time is
When a class extends the Thread class ,it should override ............ method of Thread class to start that thread.
A', on 9th January, 2015 agrees to sell his immovable property to 'R' and out of the total sale consideration of Rs. 3,00,000/- receives a sum of Rs. 1,00,000/- from 'B' as advance payment and agrees to vacate the property and handover vacant peaceful physical possession thereof to 'B' and to execute the Sale Deed of the property in favour of 'B' on receipt of balance sale 'consideration' on or before 9th July, 2015. 'A' fails to vacate the property or to execute the Sale Deed or to deliver possession of the property to 'B'. 'B' after waiting patiently till 31st January, 2016, on 1st February, 2016 got issued a legal notice to 'A' to take the balance sale consideration and execute the Sale Deed and deliver vacant peaceful physical possession. 'A' vide his reply received by 'B' on 17th February, 2016 denies the agreement. The limitation of three years available to 'B' for instituting a suit for specific performance is:
Which of the following statements are CORRECT when a protein sequence database is searched using the BLAST algorithm?
P. A larger E-value indicates higher sequence similarity.
Q. E-value -10 indicates sequence homology.
R. A higher BLAST score indicates higher sequence similarity.
S. E-value > 10-10 indicates sequence homology.
If in a certain coding language, 'lo re ga' indicates 'Bears Are Scary', 'sa ga pa' indicates 'Kings Are Hungry', 'so du pa' indicates 'Kings Will Die' and 'bu so' indicates 'They Die'. What would 'bu du' indicate in that code language?