UGC NET CS 2017 Jan – III Read Discuss Courses UGC NET CS 2017 Jan - III Please wait while the activity loads. If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled. If loading fails, click here to try again Question 1Which of the following is an interrupt according to temporal relationship with system clock ?Maskable interruptPeriodic interruptDivision by zeroSynchronous interruptUGC NET CS 2017 Jan - III Computer Organization and Architecture Discuss itQuestion 1-Explanation: According to temporal relationship with system clock we classify interrupt in two ways: 1- Synchronous: The source of interrupt is in phase to the system clock is called synchronous interrupt. In other words interrupts which are dependent on the system clock. Example: timer service that uses the system clock. 2- Asynchronous: If the interrupts are independent or not in phase to the system clock is called asynchronous interrupt. So, option (D) is correct. For more information on interrupt Refer:Different types of interrupt levels Question 2Which of the following is incorrect for virtual memory?Large programs can be writtenMore I/O is requiredMore addressable memory availableFaster and easy swapping of processUGC NET CS 2017 Jan - III OS Memory Management Discuss itQuestion 2-Explanation: We can write large program when we have memory extension. Less I/O requirement in case of virtual memory. More addressable memory available with virtual memory Faster and easy swapping of process with the help of page replacement policy in virtual memory. So, option (B) is correct. For more information on virtual memory Refer:Virtual Memory | Operating SystemQuestion 3The general configuration of the micro-programmed control unit is given below: What are blocks B and C in the diagram respectively?Block address register and cache memoryControl address register and control memoryBranch register and cache memoryControl address register and random access memoryUGC NET CS 2017 Jan - III Microprocessor Discuss itQuestion 3-Explanation: The general configuration of the micro-programmed control unit: So, option (B) is correct.Question 4Match the following : (1)(2)(3)(4)UGC NET CS 2017 Jan - III Computer Organization and Architecture CPU control design and Interfaces Discuss itQuestion 4-Explanation: In Implied Addressing Mode location of operand specified implicitly in the definition of instruction In Immediate Addressing Mode location of operand specified in the register. In Register Addressing Mode location of operand in registers which are in CPU In Register Indirect Addressing Mode register specifies the address of the operand So, Option (A) is correct.Question 5In 8085 microprocessor, the digit 5 indicates that the microprocessor needs:–5 volts, +5 volts supply+5 volts supply only–5 volts supply only5 MHz clockUGC NET CS 2017 Jan - III Microprocessor Discuss itQuestion 5-Explanation: In 8085 microprocessor, the digit 5 indicates that the microprocessor needs +5 volts supply only. So, option (B) is correct.Question 6In 8085, which of the following performs : load register pair immediate operation?LDAX rpLHLD addrLXI rp, dataINX rpUGC NET CS 2017 Jan - III Microprocessor Discuss itQuestion 6-Explanation: LDAX - Load accumulator indirect( This instruction copies the contents of that memory location into the accumulator. ) LHLD - Load H and L register direct ( This instruction loads the contents of the 16- bit memory location into the H and L register pair. ) LXI - Load register pair immediate( The instruction loads 16-bit data in the register pair designated in the operand.) INX - Increment register pair by 1.( It will increment the register value by 1.) So, option (C) is correct.Question 7Consider following schedules involving two transactions: S1 : r1(X); r1(Y); r2(X); r2(Y); w2(Y); w1(X) S2 : r1(X); r2(X); r2(Y); w2(Y); r1(Y); w1(X) Which of the following statement is true?Both S1 and S2 are conflict serializable.S1 is conflict serializable and S2 is not conflict serializable.S1 is not conflict serializable and S2 is conflict serializable.Both S1 and S2 are not conflict serializable.UGC NET CS 2017 Jan - III Transactions and concurrency control Discuss itQuestion 7-Explanation: S1 is not conflict serializable and S2 is conflict serializable. So, option (C) is correct.Question 8Which one is correct w.r.t. RDBMS ?primary key ⊆ super key ⊆ candidate keyprimary key ⊆ candidate key ⊆ super keysuper key ⊆ candidate key ⊆ primary keysuper key ⊆ primary key ⊆ candidate keyUGC NET CS 2017 Jan - III ER and Relational Models Discuss itQuestion 8-Explanation: primary key ⊆ candidate key ⊆ super key in RDBMS For more information Refer:DBMS | Keys in Relational Model (Candidate, Super, Primary, Alternate and Foreign) Option (B) is correct.Question 9Let pk(R) denotes primary key of relation R. A many-to-one relationship that exists between two relations R1 and R2 can be expressed as follows :pk(R2) → pk(R1)pk(R1) → pk(R2)pk(R2) → R1 ∩ R2pk(R1) → R1 ∩ R2UGC NET CS 2017 Jan - III ER and Relational Models Discuss itQuestion 10For a database relation R(A, B, C, D) where the domains of A, B, C and D include only atomic values, only the following functional dependencies and those that can be inferred from them are : A → C B → D The relation R is in _______.First normal form but not in second normal form.Both in first normal form as well as in second normal form.Second normal form but not in third normal form.Both in second normal form as well as in third normal form.UGC NET CS 2017 Jan - III Database Design(Normal Forms) Discuss itQuestion 10-Explanation: A relation is in first normal form if every attribute in that relation is single valued attribute. It is in 1NF. {A,B} are prime attribtes and {C,D} are non-prime attribute. A+ = {A,C} B+ = {B,D} {A,B}+ = {A,B,C,D} so AB is the key. But A+ = {A,C} B+ = {B,D} makes it partial dependency. So, this relation is not in 2NF. So, option (A) is correct. 12345678 There are 76 questions to complete. You have completed questions question Your accuracy is Correct Wrong Partial-Credit You have not finished your quiz. If you leave this page, your progress will be lost. Correct Answer You Selected Not Attempted Final Score on Quiz Attempted Questions Correct Attempted Questions Wrong Questions Not Attempted Total Questions on Quiz Question Details Results Date Score Hint Time allowed minutes seconds Time used Answer Choice(s) Selected Question Text All doneNeed more practice!Keep trying!Not bad!Good work!Perfect! Last Updated : 13 Sep, 2021