Online Class Room 4 HSST Computer Science Exam 2022

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Mock Exam 25 : Microprocessor

 Interrupt is a mechanism by which an I/O or an instruction can suspend the normal execution of processor and get itself serviced. Generally, a particular task is assigned to that interrupt signal. In the microprocessor based system the interrupts are used for data transfer between the peripheral devices and the microprocessor. Interrupt Service Routine(ISR) A small program or a routine that when executed services the corresponding interrupting source is called as an ISR. Maskable/Non-Maskable InterruptAn interrupt that can be disabled by writing some instruction is known as Maskable Interrupt otherwise it is called Non-Maskable Interrupt. There are 6 pins available in 8085 for interrupt: TRAP RST 7.5 RST6.5 RST5.5 INTR INTA Execution of Interrupts When there is an interrupt requests to the Microprocessor then after accepting the interrupts Microprocessor send the INTA (active low) signal to the peripheral. The vectored address of particular interrupt is stored in program count...

GK & Current Affairs Mock Exam #24

1.Internal commands: The internal commands are those commands that are automatically loaded in the memory. Some commonly used DOS internal commands are 1 Cls 2. Dir 3. Date 4. Time 5. Ver 6. Copycon 7. Type 8. Ren 9. Del 10. MD 11. CD 12. RD 13. Copy 1) Cls :- The purpose of this command is to clear the display screen and redisplay the Dos prompt at the top left corner of the screen. Syntax:- C : / > Cls 2) Dir:- It displays the list of directories and files on the screen. Syntax:- C : / > dir. a. C : / > dir/p – It displays the list of directories or files page wise b. C: / > dir/w- It displays the list of directories or files width wise c. C : / > dir/d: –It display list of directories or files in dr...

Unix and DOS Commands

Thycaud Ayya (1814 -1909) * Guru of Ayya Vaikundan, Sri Narayana Guru , Chattampi Swamikal and Ayyankali. * Born in Madras * His original name was Subharayan. * First social reformer. He started "Panthibhojanam"(inter-dining) in Kerala * Famous saying: "intha ulakathile oru jaathi oru matham orukadavul" * Founder of famous ” Saiva Prakasha Sabha” ofchalai,Trivandrum . Ayya Vaikundar (1820-1851) * Worked for the upliftment of the Dalit Hindus. * He is referred to as Sampooranathevan (Mudi sodum Perumal), adeva (a deity) according to his followers. * Founder of Samathwa Samajam, a reform movement for nadar community. Brahmananda Swami Shivayogi (1852-1929) * Founded the Ananda Maha Sabha and Anandamatham (religion ofbliss) * Founded the Asramam at Alathur in Palghat district * Condemned caste barriers, penance, pilgrimages, idol worship etc. * Works: Mokshapradipam, Anandasutram Chattambi Swamikal (1853 -1924)  * Nair reformist ...

Mock Exam #21 Based on Software Engineering

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1. Gray code representation of 14 is 1010 1100 1001 1110 2. What is XS3 Code of 24 is 0101 0111 0101 1111 0111 0111 11011111 3. Reflected binary code (RBC) is XS3 Code Gray code 1's Complement 2's Complement 4.A Cyclic Redundancy Check (CRC) is Error-detecting code Error Correction Code Random Checking Code None of these 5. Code invented by W. Wesley Peterson CRC Gray Code XS3 Code None of these

Mock Exam 19 : Test 1) Spiral Model was developed by? Bev Littlewood Berry Bohem Roger Pressman Victor Bisili Answer = B  Explanation: Spiral model was developed by Berry Bohem in 1986 in his article "A Spiral Model of Software Development and Enhancement" 2) Which model is popular for students small projects ? Waterfall Model Spiral Model Quick and Fix model Prototyping Model Answer = A Explanation: No Explanation 3) Which is not a software life cycle model? Spiral Model Waterfall Model Prototyping Model Capability maturity Model Answer = D  Explanation:Capability maturity model is not a software life cycle model 4) Project risk factor is considered in ? Spiral Model Waterfall Model Prototyping Model Iterative enhancement Model Answer = A Explanation:Aim of Risk analysis phase in the spiral model is to eliminate the high risk problems before they threaten the project operation or cost.   5) SDLC stands for ? ...

Take Mock Exam on Current IT Trends

Cloud Computing One of the most talked about concept in information technology is the cloud computing. Clouding computing is defined as utilization of computing services, i.e. software as well as hardware as a service over a network. Typically, this network is the internet. Cloud computing offers 3 types of broad services mainly Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). Some of the benefit of cloud computing is as follows: Cloud computing reduces IT infrastructure cost of the company. Cloud computing promotes the concept of virtualization, which enables server and storage device to be utilized across organization. Cloud computing makes maintenance of software and hardware easier as installation is not required on each end user’s computer. Some issues concerning cloud computing are privacy, compliance, security, legal, abuse, IT governance, etc.

Mock Exam #16

Mock Exam #15 : Constitution and Current Affairs.

Click Here 4 Mock Exam #14 : OS

1. Process is program in High level language kept on disk contents of main memory a program in execution a job in secondary memory Exp : In computing, a process is an instance of a computer program that is being executed. It contains the program code and its current activity. Depending on the operating system (OS), a process may be made up of multiple threads of execution that execute instructions concurrently. 2. Who created DOS operating sytem Tim Paterson Paul Allen Bill Gates Steve Jobs Exp: Tim Paterson (born 1956) is an American computer programmer, best known for creating 86-DOS, an operating system for the Intel 8086. 3.A system program that combines the separately compiled modules of a program into a form suitable for execution assembler linking loader cross compiler load and go linking loader.  A loader which combines the functions of a relocating loader with the ability to combine a number of program segments that have been independ...

Question Paper Code: 98/2011 Exam: HSST Computer Science Category No: 111/2010 Date of Test: 01-09-2011 Alpha code: B 1.Which of the following preposition is a tautology? (A) p v q-> p (B) p->(q-> p) (C) p v (q-> p) (D) none of these Answer: B 2. p->q->r is equivalent to: (A) p->q->r (B) p->(q->r) (C) p v (q->r) (D) none of these Answer: A 3. Why do we go for Normalization of Data Bases? (A) To avoid the repetitions (B) To prevent fragmentation (C) Avoid redundancy (D) To prevent replication Answer: C 4. Name the component carrying the ALU and Control Unit in Digital Computer: (A) Microprocessors (B) Nano chips (C) MEMS (D) Hybrid Computer Answer: A Give the name of the Linear list in which elements can be added at ends but not in the middle: (A) Array (B) Queue (C) Tree (D) Circular Queue Answer: X Explanation: Circular queue is a linear data structure. In circular queue the last node is connected back to the first node to make a circle. Circular ...

Module III Operating Systems System software – definition, components, operating system, language translator, loaders, linkers,interpreters, compilers, overview of compilation process, scanning, pausing, code optimization,software tools, library routines, text editors, program generators, debugging tools. OS as a resource manager, structure of OS shell, Kernel, utilities, resourse management routines,evolution of OS, multiprogramming, time sharing, real time systems, parallel systems, distributed systems, OS functions process description and control, process control, process state, operation on process, concurrent process, threads, processes and threads, micro kernels, schedulers, scheduling algorithms, independent and concurrent processes, critical section, mutual exclusion, Petersons solution, semaphore, classical synchronization concept of interprocess communications. Deadlock, starvation, conditions for deadlock, resource allocation problem, deadlock handling, prevention a...

1.Which of the following is not a characteristics of a relational database model Tables Tree like structures Complex logical Relationship Records 2. Commit is a DDL DML DCL TCL 3.Which level of Abstraction describes how data are stored in the data base ? Physical level Logical level View level Abstraction level 4.Third normal form is based on the concept of Closure Dependency Transitive Dependency Normal Dependency Functional Dependency 5.Referential integrity is directly related Relation key Foreign key Primary key Candidate key 6.Which of the following is not a type of Database Management System ? Hierarchical Network Relational Sequential 7.Relations produced from an E-R model will always be in 1 NF 2NF 3NF BCNF More Questions >>

Hi Friends Recently I received overwhelming responses for Mock Test Series. As per member's request I Provide the answer keys of these exams in PDF formats . You can download and share the same with your friends. Thanking you Faisal Download Answer Keys of Mock Test # 3 ( Computer Networks )

Q.Which phenomenon of ofc supports transmission of data? Ans : Total internal reflection When incident light is less than critical angle, total internal reflection occurs Q.Which topology requires a central controller or hub ? A Mesh topology B Star topology C Bus topology D Ring topology Answer: B Q. In a broad sense,  a railway track is an example of A. Simplex B.Half-duplex C.full-duplex D.all the above Answer: B Explanation: What is Simplex, Half-Duplex & Full-Duplex? Simplex Simplex is one direction. A good example would be your keyboard to your CPU.  The CPU never needs to send characters to the keyboard but the keyboard  always sends characters to the CPU. In many cases, Computers almost always  send characters to printers, but printers usually never send characters to  computers (there are exceptions, some printers do talk back). Simplex  requires only one lane (in the case of serial). Half-Duple...

HSST CS Mock Test #1 10 Questions from DBMS Email address  * ufaizal29@gmail.com Q.1 In the relational model, cardinality is termed as:  *   (A) Number of tuples.   (B) Number of attributes   (C) Number of tables.   (D) Number of constraints. Q.2 Which component of Database storage manager that is responsible For Fetching data from disk storage to main memory ?   a. File manager 1   b. Buffer manager   c. Transaction manager   d. Integrity manager Q.3 Select * from employeeWhat type of statement is this?   a) DML   b) DDL   c) View   d) Integrity constraint Q.4 If every non-key attribute is functionally depedent primary key,  then the relation will be in   a) First normal form   b) Second normal form   c) Third form   d) Fourth normal form Q.5 ....... introduced th...