What statement is true taking into account the following Jakarta/Java EE source code in terms of JMS - Java Messaging Service API?

The client program consumes/receives messages from a Java EE server queue and it is breaking the while loop if and only if receives a non-text message

The client program consumes/receives messages from a Java EE server queue and it is looping forever

The client program consumes/receives messages from a Java EE server queue and it is breaking the while loop if and only if receives a text message

The source code is not compliant with JMS API

What are the different types of messages available in the Java/Jakarta EE JMS API?

Message, TextMessage, BytesMessage, StreamMessage, ObjectMessage, MapMessage

Message, TextMessage, BytesMessage, StreamMessage, ObjectMessage, ListMessage

Message, TextMessage, BytesMessage, XMLMessage, ObjectMessage, JSONMessage

Message, TextMessage, BytesMessage, CBORMessage, ObjectMessage, JSONMessage

In OpenMPI, when does the routine MPI_Recv() return?

After the arrival of the message the routine is waiting for and the data collected

After a time specified in the routine

After the arrival of the message the routine is waiting for, but before the data has been collected.

How many messaging models do JMS - Jakarta / Java EE Messaging Service provide for and what are they?

b) JMS provides for two messaging models, Publish-and-Subscribe (PUB/SUB) and Point-to-Point queuing.

a) JMS provides for one messaging model, point-to-point queuing.

c) JMS provides for three messaging models, Publish-and-Subscribe (PUB/SUB), ESB - Enterprise Service Buss and Point-to-Point (P2P) queuing.

d) None of the existing answers.

e) JSM provide for zero messaging models.

In Jakarta/Java EE technology, what is publish/subscribe messaging paradigm?

b) With publish/subscribe message passing the sending application/client establishes a named topic in the JMS broker/server and publishes messages to the topic. The receiving clients register (specifically, subscribe) via the broker to messages by topic; every subscriber to a topic receives each message published to that topic. There is a one-to-many relationship between the publishing client and the subscribing clients.

a) With publish/subscribe message passing the sending application/client establishes only named queues in the JMS broker/server and publishes messages to this queue. The receiving clients register (specifically, subscribe) via the broker to messages by queue, every subscriber to a queue receives only one message published to that queue. There is only one-to-one relationship between the publishing client and the subscribing clients.

c) With publish/subscribe message passing the sending application/client establishes only named queues in the JMS broker/server and publishes messages to this queue. The receiving clients register (specifically, subscribe) via the broker to messages by queue : every subscriber to a queue receives only the acknowledgement messages published to that queue. There is only one-to-one relationship between the publishing client and the subscribing clients.

d) None of the existing answers.

e) With publish/subscribe message passing the sending application/client establishes only named queues in the JMS broker/server and publishes messages to this queue. The receiving clients register (specifically, subscribe) via the broker to messages by queue; every subscriber to a queue receives each message published to that queue. There is only one-to-one relationship between the publishing client and the subscribing clients.

Indicate the correct statement about the next sequence: #pragma omp parallel for for (int i = 1; i < 10; i++) { factorial[i] = i * factorial[i-1]; }

b) The sequence will lead to a race conditlon problem at the data level

a) The sequence is correct and will generate always correct results.

c) The sequence will lead to a deadlock because the thread procesing factorial[i] is waiting for the other threads.

d) None of the existing answers.

e) The sequence is incorrect because the parallel and for structures cannot be combined.

What is the true statement for Java RMI 1.1 in terms of the logical flow actions’ order:

a) Sequence: 1. bind, 2. lookup, 3. call, 4.return

b) Sequence: 1. call, 2. lookup, 3. bind, 4. return

c) Sequence: 1. lookup, 2. call, 3. bind, 4. return

d) Sequence: 1. lookup, 2. bind, 3. call, 4. return

e) Sequence: 1. call, 2. return, 3. bind, 4. lookup

What is asynchronous messaging?

a) Asynchronous messaging involves a client that does not wait for a message from the server. An event is used to trigger a message from a server. So even if the client is down, the messaging will complete successfully.

b) Asynchronous messaging involves a client waiting for a message from the server. An event is used to trigger a message from a server. So even if the client is down, the messaging will complete successfully.

c) Asynchronous messaging involves a client waiting for a message from the server. An event is used to trigger a message from a server. So even if the client is down, the messaging won't complete successfully.

d) None of the existing answers.

e) Asynchronous messaging involves a client waning for a message from the server. So even if the client is up, the messaging won't complete successfully.

What is a synchronous messaging?

d) Synchronous messaging involves a client that waits for the server to respond to a message. So, if one end is down the entire communication will fail.

a) Synchronous messaging involves a client that waits for the server to respond to a message. So, if one end is down the entire communication won’t fail.

c) Synchronous messaging involves a client that waits for a period of time for the server to respond to a message. So, if one end is down the entire communication will fail.

e) Synchronous messaging involves a client that waits for a period of time for the server to respond to a message. So, if one end is down the entire communication won’t fail.

What effect does the nowait directive have on #pragma omp for?

a) Threads ignore the barrier that exists by default when existing the for loop.

b) Threads are expected to exit the for loop at the same time.

c) Cannot apply nowait to a #pragma omp for the directive.

d) Threads are expected to start at the same time.

e) Threads start running as soon as possible.

Considering the following independent tasks: - T1 - lasts 3 seconds - T2 - lasts 5 seconds - T3 - lasts 2 seconds - T4 - lasts 6 seconds Which of the following statements is true?

a) Executing the 4 tasks in parallel on a system with a single CPU with single core will take at least 16 seconds.

b) Executing the 4 tasks in an asynchronous model will take at least 16 seconds.

d) Executing the 4 tasks in a sequential model will take at least 16 seconds.

e) Executing the 4 tasks in parallel (distributing each task on a core/ processor) will take at least 6 seconds.

The concept of "Embarrassingly parallel workload or problem" is specific to:

a) Problems that can be easily parallelized (even completely).

b)Problems that cannot be fully paralleled .

c) Problems that are difficult for programmers who use languages for parallel programming.

d) Problems with complex mathematical solutions that cannot be translated into software.

e) Problems impossible to parallel.

What statement is false taking into account the JMS - Jakarta/Java EE Messaging Service technology:

a) Even if the receiver is down, the MOM (Message Oriented Middleware) Broker will store the messages on it’s behalf and will send them once it comes back up, without any configuration.

b) Thus not all the pieces need to be up all the time for the application to function as a whole.

c) JMS is asynchronous in nature.

d) JMS Broker may handle topics and queues.

e) Even if the receiver is down, the MOM (Message Oriented Middleware) Broker will store the messages on it's behalf and will send them once It comes back up, with/ if proper configuration.

Structurally, a network includes a set of nodes interconnected by a set of transmission lines, and each connection is called a:

c) None of the existing answers.

What output may be generated by the following C/C++ OpenMP source code be aware that are 3 threads and the iterations from 0 to 4?

b) Hello world from (0) Hello world from (2) Iteration 4 by (2) Iteration 0 by (0) Iteration 1 by (0) Hello world from (1) Iteration 2 by (1) Iteration 3 by (1)

a) Hello world from (0) Hello world from (2) Iteration 4 by (2) Iteration 0 by (0) Iteration 1 by (0) Hello world from (1) Iteration 2 by (1) Iteration 3 by (I) Iteration 5 by (I)

c) Hello world from (0) Hello world from (2) Iteration 4 by (2) Iteration 0 by (0) Iteration 1 by (0) Hello world from (1) Iteration 2 by (1) Iteration 3 by (1) Iteration 5 by (2)

d) Hello world from (0) Iteration 5 by (0) Hello maid from (2) Iteration 4 by (2) Iteration 0 by (0) Iteration 1 by (0)

What statement is true for the following C/C++ OpenMP source code?

e) None of the existing answers.

a) The program is adding 2 arrays/Vectors using 2 threads

b) The program is adding 4 arrays/vectors using 4 threads

c) The program is not using OpenMP synthax.

d) The program is adding 4 arrays/vectors using 4 threads.

What statement is true taking into account the following Java EE source code in terms of JMS Java Messaging Service API?

e) The client program consumes/receives messages from a Java EE sewer queue and it is breaking the while loop if and only if it receives a nontext message.

a) The client program consumes/receives messages from a Java EE sewer queue and it is looping forever.

b) The client program consumes/receives messages from a Java EE sewer queue and it is breaking the while loop if and only if it receives a text message.

c) The source code is not compliant with JMS API.

d) None of the existing answers.

What statement is true with respect to the following Java EE RESTful Service class source code (using Jersey API):

a) It is a RESTful class which handles HTTP GET requests for getUsers resource.

b) None of the existing answers.

c) It is not a correctJava source code.

d) It is a RESTful class which handles both HTTP GET and POST requests for getUsers resource.

e) It is a RESTful class which handles both HTTP POST requests for getUsers resource.

SUN Java CORBA has 3 parts:

d) — ORB (Object Request Broker) as OS Service/Process — Naming Service: COS — CORBA Object Service: tnameserv.exe (Nonpersistent) & orbd.exe (Persistent) — IDL idltojava &javatoidl compiler— now: idlj.exe

b) — ORB (Object Request Broker) in Class/JAR — Naming Service: rmiregistry for both Nonpersistent & Persistent — IDL idltojava &javatoidl compiler— now: idlj.exe

c) — ORB (Object Request Broker) in Class/JAR — Naming Service: COS — CORBA Object Service: tnameserv.exe (Nonpersistent) & orbd.exe (Persistent) — IDL idltojava &javatoidl compiler— now: idlj.exe

d) — ORB (Object Request Broker) as OS Service/Process — Naming Service: COS — CORBA Object Service: tnameserv.exe (Nonpersistent) & orbd.exe (Persistent) — IDL idltojava &javatoidl compiler— now: idlj.exe

e) — ORB (Object Request Broker) as OS Service/Process — Naming Service: COS — CORBA Object Service: only orbd.exe — IDL idltojava &javatoidl compiler— now: idlj.exe

What statement is not true for OpenMP programming model?

c) OpenMP programming model is designed to guarantee that input or output to the same file is synchronous when executed in parallel.

a) OpenMP programming model uses Explicit Parallelism: Programmer has full control over parallelization. OpenMP is not an automatic parallel programming model.

b) OpenMP programming model uses shared memory, threadbased parallelism: OpenMP is based on the existence of multiple threads in the shared memory programming paradigm. A shared memo).

d) OpenMP programming model uses Compiler directive based: Most OpenMP parallelism is specified through the use of compiler directives which are embedded in the source code.

What statement is true for OpenMP?

a) None of the existing answers

b) OpenMP is implemented identically by all vendors.

c) OpenMP is meant for distributed memory parallel systems

d) OpenMP is guaranteed to make the most efficient use of shared memory

e) OpenMP is meant to cover compiler generated automatic parallelization and directives to the compiler to assist such parallelization.

1. Which statement is NOT true for CORBA Common Object Request Broker Architecture in terms of the concepts?

a) In CORBA is mandatory to have both the clients and servants in Java.

b) None of the existing answers

c) CORBA Skeleton lives on server

d) CORBA Skeleton receives requests from stub via ORB

If the number of OpenMP threads is set to 4 (0MP_NUM_THREAD = 4). What would be a potential, output of the following Open MP - Parallel source code:

e) Hello (0) world (0) Hello (2) world (2) Hello (1) world (1) Hello(3) world (3)

a) A Hello (0) world (0) Hello (2) world (2) Hello (1) world (I) Hello (2) world (2)

b) Hell0 (0) world (0) Hello (0) world (1) Hello (1) world (2) Hello (2) world (3)

c) Hello (0) world (1) Hello (2) world (3)

d) None of the existing answers

Toate programele de Java din aceasta grila au fost testate utilizând compilatorul furnizat de Sun Microsystem. JDK 1.5.0. Se considera programul :

c) Afisarea prototipurilor metodelor statice si nonstatice publice si private ale clasei cu numele dat in parametrul args[0]

a) Afisarea prototipurilor metodelor statice si nonstatice publice ale clasei cu numele dat in parametrul args[0]

b) Afisarea prototipurilor metodelor statice si nonstatice private ale clasei cu numele dat in parametrul args[0]

d) Afisarea campurilor din clasa cu numele dat in parametrul args[0]

e) Genereaza eroare de executie compilare.

Care din urmatoarele enunturi este correct pentru lucrul multi-fir in Java :

a) Un fir de execuție este în starea „gata de execuţie"-runnable thread" dacă şi numai dacă se aplează metoda start() a obiectului definit din clasa ce este derivată din clasa Thread;

b) Un fir de execuție este în starea .gata de execuţie"-runnable thread" dacă şi numai dacă se aplează metoda run () a obiectului definit din clasa ce este derivată din clasa Thread;

c) Pentru ca un fir de execuție să fie în starea .gata de execuţie"-runnable thread" este suficientă crearea unui obiect definit din clasa ce este derivată din clasa Thread;

d) Pentru ca un fir de execuție să fie în starea .gata de execuție"-runnable thread" este suficientă crearea unui obiect definit din clasa ce este implementează interfaţa Runnable;

e) Un fir de execuție este în starea gata de execuţie"-runnable thread" dacă şi numai dacă se aplează metoda stop() a obiectului definit din clasa ce este derivată din clasa Thread;

Taking into account the stateless HTTP protocol analysis between the web browser– Mozilla and the Java Servlet from the server side:

a) The Java Servlet with ShowSession name from the S09 context of the server with IP: 192.168.100.19 and port: 8080, processed the "if (session.isNew ())" branch in method “processRequest" and set the "cookie" JSESSIONID=CBC5... for storing variable “accessCount" on the current session. The variable “accessCount” is visible for each client that makes HTTP GET request to the servlet

b) The Java Servlet with ShowSession name from the S09 context of the server with IP: 192.168.100.19 and port: 8080, processed the "if (session.isNew ())" branch in method “processRequest" and set the "cookie" JSESSIONID=CBC5... for storing variable “accessCount" on the current session. The variable “accessCount” is visible (is the “same”) for all the clients that make HTTP GET request to the servlet

c) The Java Servlet with ShowSession name from the S09 context of the server with IP: 192.168.100.19 and port: 8080, processed the "else" branch in method processRequest

d) The Java Servlet with ShowSession name from the S09 context of the server with IP: 192.168.100.19 and port: 8080, processed the "if (session.isNew ())" branch in method “processRequest" and set the "cookie" CookieIon = IONIONION for storing variable “accessCount" on the current session. The variable “accessCount” is visible (is the “same”) for all the clients that make HTTP GET request to the servlet

e) The Java Servlet with ShowSession name from the S09 context of the server with IP: 192.168.100.19 and port: 8080, processed the "if (session.isNew())" branch in method “processRequest "and set the "cookie" CookieIon = IONIONION for storing variable “accessCount" on the current session. The variable “accessCount” is visible for each client that makes HTTP GET request to the servlet

In urma rulãrii programului urmãtor:

a) a= Uid = 888, Issuer = WWW si b= Uid = 888, Issuer = WWW

b) a= Uid = 234, Issuer = WWW si b= Uid = 888, Issuer = WWW

c) a= Uid = 234, Issuer = Ion si b= Uid = 355, Issuer = WWW

d) a= Uid = 234, Issuer = Ion si b= Uid = 888, Issuer = WWW

Se consideră clasele:

Se obţin mesajele Apel CB; Apel CBI; Apel CD;

Se obţin mesajele Apel CBI; Apel CB; Apel CD;

Se obţin mesajele Apel CD; Apel CB

Se obţin mesajele Apel CB; Apel CD;

Conceptul de polimorfism se implementeaza prin:

Supraincarcare si derivare/mostenire de clase

Supraincarcare de functii si prin virtualizare

Supradefinire si virtualizare de functii

Supraincarcare si supradefinire de functii

Se considera programul:

Niciuna din valorile de mai sus

Stiind ca de la deplasament 0x43 in urmatoarea analiza de trafic de protocol SNMP (pentru gestiunea nodurilor de retea a unui sistem distribuit) incepe singurul obiect (identificabil prin OID) si stiind ca in ASN.1 DER tag-ul pentru definirea OID-urilor este 0x06:

Niciuna din valorile de mai sus

DaD Quiz

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39 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How JMS- Jakarta/Java EE Messaging Service is different from RPC/RMI (Remote Procedure Call/Remote Method Invocation)?

In RPC the method invoker waits for the method to finish execution and return the control back to the invoker. Thus it is completely asynchronous in nature. While in JMS the message sender just sends the message to the destination and continues its own processing. The sender does not wait for the receiver to respond. This is also synchronous behaviour.

In RPC the method invoker waits for the method to finish execution and return the control back to the invoker. Thus is completely synchronous in nature. While in JMS the message sender just sends the message to the destination and continues its own processing. The sender does not wait for the receiver to respond. This is asynchronous behaviour.

None of the existing answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements/conclusions is NOT true in light of Amdahl's law used to measure parallel processing performance?

Parallelizing 95% of the solution and using a number of 1000 processors/cores simultaneously, the execution time is theoretically a maximum of 20 times shorter than the duration of the sequential solution.

The performance of parallel processing is dependent on the parallelizable portion of the code and the number of processors/cores.

Increasing the number of processors does not automatically mean a significant decrease in processing time for non 100% parallel solutions.

All problems could be parallelizable and the performance is directly proportional to the number of processors/cores used.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In OpenMPI, what is printed by the process 0?

me : 0, them : 1

me : 0, them : 1 OR me : 0, them : 8

me : 1 them : 0 OR me : 0, them : 8

me : 1 them : 0

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If we consider 2 vectors with values, X and Y, and the next sequence (pseudocode) that we want to execute in parallel : S = 0; for (i = 1; i < 1000; i++) S = S + X[i] + Y[i]; What is the type of problem you will face in implementing the parallel solution?

The sequence cannot be executed in parallel because each iteration depends recursively on the previous interactions

Parallel thread synchronization issues

Loop dependencies

Race condition issues

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In OpenMPI, what is the purpose of a message tag?

To indicate the type of message

To count the number of characters in a message

To provide a mechanism to differentiate between message-passing routines written by different programmers

To provide a matching mechanism differentiating between message sent from one process to another process

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements is NOT a parallel form/type of processing?

Bit level parallelism

RAM memory parallelism

Instruction level parallelism

Task-level parallelism

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements about OpenMP Is NOT correct?

The main components of OpenMP are the compiler directives, the run-time library and the environment variables

OpenMP is an API that allows the implementation of explicit parallel solutions with multiple threads

OpenMP is designed for parallel systems with distributed memory and guarantees efficient memory usage

OpenMP supports UMA and NUMA architectures

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DaD Quiz

39 questions

How JMS- Jakarta/Java EE Messaging Service is different from RPC/RMI (Remote Procedure Call/Remote Method Invocation)?

Which of the following statements/conclusions is NOT true in light of Amdahl's law used to measure parallel processing performance?

In OpenMPI, what is printed by the process 0?

If we consider 2 vectors with values, X and Y, and the next sequence (pseudocode) that we want to execute in parallel : **S = 0; for (i = 1; i < 1000; i++) S = S + X[i] + Y[i];** What is the type of problem you will face in implementing the parallel solution?

In OpenMPI, what is the purpose of a message tag?

Which of the following statements is NOT a parallel form/type of processing?

Which of the following statements about OpenMP Is NOT correct?

What statement is true taking into account the following Jakarta/Java EE source code in terms of JMS - Java Messaging Service API?

What are the different types of messages available in the Java/Jakarta EE JMS API?

In OpenMPI, when does the routine MPI_Recv() return?

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Discover more resources for Arts

If we consider 2 vectors with values, X and Y, and the next sequence (pseudocode) that we want to execute in parallel : S = 0; for (i = 1; i < 1000; i++) S = S + X[i] + Y[i]; What is the type of problem you will face in implementing the parallel solution?