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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
Hexadecimal values assigned to user variables are treated as _____________
Consider the string abbccddeee. Each letter in the string must be assigned a binary code satisfying the following properties: 1. For any two letters, the code assigned to one letter must not be a prefix of the code assigned to the other letter. 2. For any two letters of the same frequency, the letter which occurs earlier in the dictionary order is assigned a code whose length is at most the length of the code assigned to the other letter. Among the set of all binary code assignments which satisfy the above two properties, what is the minimum length of the encoded string? 
Read the following sentences and choose the correct option. (i) Variables can only take discrete values while Attributes can take continuous values. (ii) Variables can only take continuous values while Attributes take discrete value. (iii) Attributes and variables are dependent on each other. (iv) Width of an impeller blade is a variable but no. of defective blades in a lot is an attribute.
Which of the following explain the concept of values? (A) Values are beliefs tied inextricably to human emotion and behaviour (B) Values refer to desirable goals people strive to attain (C) Values are conflict-free (D) Values are ordered by importance relative to one another (E) Values are utilized primarily to effect change in knowledge of a person Choose the correct answer from the options given below :
In a certain number of days, 10 workers were assigned to complete a task. Since some of the workers have not worked all these days, only 25% of the task was completed after 15 days. From the 16th day onwards when all 10 started working, the percentage of the total work that was completed at the end of the assigned days was 62.5%. How many days were assigned initially?
There are 6 tasks and 6 persons. Task 1 cannot be assigned either to person 1 or to person 2; task 2 must be assigned to either person 3 or person 4. Every person is to be assigned one task. In how many ways can the assignment be done?
There are 6 tasks and 6 persons. Task 1 cannot be assigned either to person 1 or person 2. Task 2 must be assigned to either person 3 or person 4. Every person is to be assigned one task. In how many ways can the assignment be done?
There are 5 tasks and 5 persons. Task-1 cannot be assigned to either person-1. or person-2. Task-2 must be assigned to either person-3 or person-4. Every person is to be assigned one task. In how many ways can the assignment be done?
There are six tasks and six persons. Task 1 cannot be assigned to either person 1 or 2, task 2 must be assigned to either person 3 or person 4. Every person has to be assigned a task. In how many ways can the assignment be done?