MCQ of Computer Networking with answer set-2


1. A network that needs human beings to manually route signals is called....

A) Fiber Optic Network         B) Bus Network

C) T-switched network           D) Ring network



2. TCP/IP ................. layer corresponds to the OSI models to three layers.

A) Application          B) Presentation

C) Session                 D) Transport



3. Which of the transport layer protocols is connectionless?

A) UDP                      B) TCP

C) FTP                       D) Nvt



4. Which of the following applications allows a user to access and change remote files without actual transfer?

A) DNS                     B) FTP

C) NFS                     D) Telnet



5. The data unit in the TCP/IP layer called a .....

A) Message             B) Segment

C) Datagram           D) Frame



6. DNS can obtain the ................. of host if its domain name is known and vice versa.

A) Station address       B) IP address

C) Port address            D) Checksum



7. Which of the following OSI layers correspond to TCP/IP's application layer?

A) Application           B) Presentation

C) Session                 D) All of the above




8. Devices on one network can communicate with devices on another network via a .......

A) File Server            B) Utility Server

C) Printer Server        D) Gateway



9. A communication device that combines transmissions from several I/O devices into one line is a


A) Concentrator         B) Modifier

C) Multiplexer           D) Full duplex file



10. Which layers of the OSI determines the interface often system with the user?

A) Network              B) Application

C) Data link             D) Session



11. Which of the following of the TCP/IP protocols is the used for transferring files from one machine to another?

A) FTP                 C) SNMP

B) SMTP             D) Rpe



12. In which OSI layers does the FDDI protocol operate?

A) Physical       B) Data link

C) Network       D) A and B



13. In FDDI, data normally travel on ..................

A) The primary ring          B) The Secondary ring

C) Both rings                     D) Neither ring



14. The ............layer of OSI model can use the trailer of the frame for error detection.

A) Physical                 B) Data link

C) Transport               D) Presentation



15. In a ................topology, if there are n devices in a network, each device has n-1 ports for cables.

A) Mesh                  B) Star

C) Bus                     D) Ring



16. Another name for Usenet is

A) Gopher            B) Newsgroups

C) Browser           D) CERN



17. The standard suit of protocols used by the Internet, Intranets, extranets and some other networks.

A) TCP/IP               B) Protocol

C) Open system      D) Internet work processor



18. State whether the following is True or False.

i) In bus topology, heavy Network traffic slows down the bus speed.

ii) It is multipoint configuration.


A) True, True           B) True, False

C) False, True         D) False, False



19. Which of the following is the logical topology?

A) Bus                    B) Tree

C) Star                   D) Both A and B



20. Which of the following is/ are the drawbacks of Ring Topology?

A) Failure of one computer, can affect the whole network

B) Adding or removing the computers disturbs the network activity.

C) If the central hub fails, the whole network fails to operate.

D) Both of A and B


Answers:


1. C) T-switched network
2. A) Application
3. A) UDP
4. C) NFS
5. D) Frame
6. B) IP address
7. D) All of the above
8. D) Gateway
9. C) Multiplexer
10. B) Application
11. A) FTP
12. D) A and B
13. A) The primary ring
14. A) Physical
15. A) Mesh
16. B) Newsgroups
17. A) TCP/IP
18. A) True, True
19. C) Bus
20. D) Both of A and B

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Solved MCQ of Computer networking set-1


1.  The computer network is
A) Network computer with cable
B) Network computer without cable
C) Both of the above
D) None of the above

2. FDDI used which type of physical topology?
A) Bus
B) Ring
C) Star
D) Tree


3. FTP stands for
A) File transfer protocol
B) File transmission protocol
C) Form transfer protocol
D) Form transmission protocol


4. Ethernet system uses which of the following technology.
A) Bus
B) Ring
C) Star
D) Tree

5. Which of the following are the network services?
A) File service
B) Print service
C) Database service
D) All of the above

6. If all devices are connected to a central hub, then topology is called
A) Bus Topology
B) Ring Topology
C) Star Topology
D) Tree Topology

7. FDDI stands for
A) Fiber Distributed Data Interface
B) Fiber Data Distributed Interface
C) Fiber Dual Distributed Interface
D) Fiber Distributed Data Interface

8. Which of the following is an application layer service?
A) Network virtual terminal
B) File transfer, access and management
C) Mail service
D) All of the above
9. Which is the main function of transport layer?
A) Node to node delivery
B) End to end delivery
C) Synchronization
D) Updating and maintaining routing tables

10. The ............ layer change bits onto electromagnetic signals.
A) Physical
B) Transport
C) Data Link
D) Presentation

Answers:
1.       C) Both of the above
2.       B) Ring
3.       A) File transfer protocol
4.       A) Bus
5.       D) All of the above

6.       C) Star Topology
7.       A) Fiber Distributed... Interface
8.       C) Mail service
9.       B) End to end delivery
10.   A) Physical


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MCQ of Database Management System with answer set-4


1. In SQL, which command is used to issue multiple CREATE TABLE, CREATE VIEW and GRANT statements in a single transaction?

A) CREATE PACKAGE

B) CREATE SCHEMA

C) CREATE CLUSTER

A) All of the above


2. In SQL, the CREATE TABLESPACE is used

A) to create a place in the database for storage of scheme objects, rollback segments, and naming the data files to comprise the tablespace.

B) to create a database trigger.

C) to add/rename data files, to change storage

D) All of the above


3. Which character function can be used to return a specified portion of a character string?

A) INSTR

B) SUBSTRING

C) SUBSTR

D) POS


4. Which of the following is TRUE for the System Variable $date$?

A) Can be assigned to a global variable.

B) Can be assigned to any field only during design time.

C) Can be assigned to any variable or field during run time.

D) Can be assigned to a local variable.


5. What are the different events in Triggers?

A) Define, Create

B) Drop, Comment

C) Insert, Update, Delete

D) Select, Commit


6. Which is the subset of SQL commands used to manipulate Oracle Database Structures, including tables?

A) Data Definition Language

B) Data Manipulation Language

C) Data Described Language

D) Data Retrieval Language


7. The SQL statement SELECT SUBSTR('123456789', INSTR('abcabcabc','b'), 4) FROM EMP; prints

A) 6789

B) 2345

C) 1234

D) 456789


8. Which of the following SQL command can be used to modify existing data in a database table?

A) MODIFY

B) UPDATE

C) CHANGE

D) NEW


9. When SQL statements are embedded inside 3GL, we call such a program as ..........

A) nested query

B) nested programming

C) distinct query

D) embedded SQL


10. ................ provides option for entering SQL queries as execution time, rather than at the development stage.

A) PL/SQL

B) SQL*Plus

C) SQL

D) Dynamic SQL



11) The RDBMS terminology for a row is

A. tuple

B. relation

C. attribute

D. degree


12) To change column value in a table the ......... command can be used.

A. create

B. insert

C. alter

D. update


13) The full form of DDL is

A. Dynamic Data Language

B. Detailed Data Language

C. Data Definition Language

D. Data Derivation Language


14) To pass on granted privileges to other user the ...... clause is used

A. create option

B. grant option

C. update option

D. select option


15) A set of possible data values is called

A. attribute

B. degree

C. tuple

D. domain


16) ......... is critical in formulating database design.

A. row column order

B. number of tables

C. functional dependency

D. normalizing


17) A primary key if combined with a foreign key creates

A. Parent-Child relationship between the tables that connect them

B. Many to many relationship between the tables that connect them

C. Network model between the tables that connect them

D. None of the above


18) A ............. represents the number of entities to which another entity can be associated

A. mapping cardinality

B. table

C. schema

D. information


19) Which two files are used during operation of the DBMS

A. Query languages and utilities

B. DML and query language

C. Data dictionary and transaction log

D. Data dictionary and query language


20) A ........... is a set of column that identifies every row in a table.

A. composite key

B. candidate key

C. foreign key

D. super key

 

Answers:


1. B) CREATE SCHEMA
2. A) to create a place in the database for storage of scheme objects, rollback segments, and naming  the data files to comprise the table-space.
3. C) SUBSTR
4. B) Can be assigned to any field only during design time.
5. C) Insert, Update, Delete
6. A) Data Definition Language
7. B) 2345
8. B) UPDATE
9. D) embedded SQL
10.D) Dynamic SQL
11) A. tuple
12) D. update
13) C. Data Definition Language
14) B. grant option
15) D. domain
16) C. functional dependency
17) A. Parent-Child relationship between the tables that connect them
18) A. mapping cardinality
19) C. Data dictionary and transaction log
20) D. super key


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MCQ of Operating System with answer set-2


1. The first batch operating system was developed in the ................. by General Motors for use on an IBM 701.
A) mid 1940's
B) mid 1950's
C) mid 1960's
D) mid  1970's

2. Process is ........................
A) A program in execution
B) An instance of a program running on a computer.
C) The entity that can be assigned to and executed
D) All of the above.


3. ................... is a facility that allows programmers to address memory from a logical point of view, without regard to the main memory, physically available.
A) Visual memory
B) Real memory
C) Virtual memory
D) Secondary memory


4. ............ is a large kernel, including scheduling file system, networking, device drivers, memory management and more.
A) Monolithic kernel
B) Micro kernel
C) Macro kernel
D) Mini kernel

5. A .................... architecture assigns only a few essential functions to the kernel,  including address spaces, Inter process communication(IPC) and basic scheduling.
A) Monolithic kernel
B) Micro kernel
C) Macro kernel
D) Mini kernel

6. State whether true or false.
 i) Multithreading is useful for application that perform a number of essentially independent tasks that do not be serialized.
ii) An example of multithreading is a database server that listens for and process numerous client request.
A) i-True, ii-False
B) i-True, ii-True
C) i-False, ii-True
D) i-False, ii-False

7. With ................ only one process can execute at a time; meanwhile all other process are waiting for the processer. With .............. more than one process can be running simultaneously each on a different processer.
A) Multiprocessing, Multiprogramming
B) Multiprogramming, Uniprocessing
C) Multiprogramming, Multiprocessing
D) Uniprogramming, Multiprocessing

8. The two central themes of modern operating system are ...............
A) Multiprogramming and Distributed processing
B) Multiprogramming and Central Processing
C) Single Programming and Distributed processing
D) None of above

9. ............... refers to the ability of multiple process (or threads) to share code, resources or data in such a way that only one process has access to shared object at a time.
A) Synchronization
B) Mutual Exclusion
C) Dead lock
D) Starvation

10. ................. is the ability of multiple process to co-ordinate their activities by exchange of information
A) Synchronization
B) Mutual Exclusion
C) Dead lock
D) Starvation

Answers:
1.       B) mid 1950's
2.       D) All of the above.
3.       C) Virtual memory
4.       A) Monolithic kernel
5.       B) Micro kernel
6.       B) i-True, ii-True
7.       C) Multi.......Multiprocessing
8.       A) Multiprogra ......processing
9.       B) Mutual Exclusion
10.   A) Synchronization

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Solved MCQ of Operating System Principles set-1


1. Which of the following is/ are the part of operating system?
A) Kernel services
B) Library services
C) Application level services
D) All of the above

2. The system of ............... generally ran one job at a time. These were called single stream batch processing.
A) 40's
B) 50's
C) 60's
D) 70's


3. In ............. generation of operating system, operating system designers develop the concept of multi-programming in which several jobs are in main memory at once.
A) First
B) Second
C) Third
D) Fourth


4. State True or False.
i) In spooling high speed device like a disk is interposed between running program and low-speed device in Input/output.
ii) By using spooling for example instead of writing directly to a printer, outputs are written to the disk.
A) i-True, ii-False
B) i-True, ii-True
C) i-False, ii-True
D) i-False, ii-False

5. Which of the following is/are the functions of operating system?
i) Sharing hardware among users.            ii) Allowing users to share data among themselves.
iii) Recovering from errors.                          iv) Preventing users from interfering with one another.
v) Scheduling resources among users.
A) i, ii, iii and iv only
B) ii, iii, iv and v only
C) i, iii, iv and v only
D) All i, ii, iii, iv and v

6. .................. executes must frequently and makes the fine grained decision of which process to execute the next.
A) Long-term scheduling
B) Medium-term scheduling
C) Short-term scheduling
D) None of the above

7. With ................ a page is brought into main memory only when the reference is made to a location on that page.
A) demand paging
B) main paging
C) prepaging
D) postpaging

8. ....................... provides a larger sized of virtual memory but require virtual memory which provides multidimensional memory.
A) Paging method
B) Segmentation method
C) Paging and segmentation method
D) None of these

9. ............... is a large kernel containing virtually the complete operating system, including, scheduling, file system, device drivers and memory management.
A) Multilithic kernel
B) Monolithic kernel
C) Micro kernel
D) Macro kernel

10. ............... is a large operating system core provides a wide range of services.
A) Multilithic kernel
B) Monolithic kernel
C) Micro kernel
D) Macro kernel
Answers:
1.       D) All of the above
2.       B) 50's
3.       C) Third
4.       B) i-True, ii-True
5.       D) All i, ii, iii, iv and v
6.       C) Short-term scheduling
7.       A) demand paging
8.       B) Segmentation method
9.       B) Monolithic kernel
10.   D) Macro kernel


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How to generate massive web traffic through Social Networking and Bookmarking Sites?

Are you worried about visitors for your sites? 

Do you want lot of web traffic to your sites? 

          If yes, I have given here some secret tips for how to generate massive web traffic rapidly through Social Networking and Bookmarking Sites on free. 

           Since generating more traffic is very difficult task and challenging work for everyone, it can be done by using Social Networking and Bookmarking Sites. You can achieve your goal by utilizing the major Social Networking and Bookmarking Sites like Facebook, Twitter, Google plus, Linkedin, Delicious, Digg, Stumbleupon, Pinterest etc. They can be major traffic sources for your sites. 


     To use those sites, you should register for them and start to make friends, followers and Subscribers.Making friends, followers and subscribers for the social sites is not easy work for newly created accounts. But I have a great way to get subscribers and followers very easily. If you want this you can get it, from here.

           After using the given method you can get lot of subscribers and followers in social Networking sites. Now you have to post article, advertise or share about your site to promote it through these Social sites. From sharing of your article or link posting you can redirect the visitors to yours site. 

         Most of the social sites or Internet marketers go to this step only but up to this is not sufficient utilization of the social networking and bookmarking sites. If you success to share your links or bookmarks through others accounts also, thousands of back-link can be generated for your sites which increases the popularity of the sites and can be generated mass amount of web traffic. But you my asked how are it possible. I know the easiest solution of this also. There is a great online tool which makes this possible; this tool does that work by exchanging the shares between their users. You can get this tool by clicking here for quick sharing and promoting the site on social networking and bookmarking sites. 

           I hope you will be 100% successes for increasing traffic for your site, if you flow thoroughly these tips by me. Please don’t forget to comment it, I will always accept it. 

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The 12 steps to become a successful blogger


1. If you have blogs or sites, from these blogs or sites you can earn by adding advertisement from PPC advertisement companies.


2. To place advertisement on your blog or site from PPC advertising companies, you should have good traffic on your blog or site. These companies pay you on the basis of page visiting and clicking on their advertisement. So your first work is to increase the number of traffic for your site. There are many methods or steps to promote the blog or site, which are listed here on the following steps. If you follow these steps, you will be 100% success, so read carefully these steps. 

At first create profile on several social or social bookmarking sites.




Make list of these profile pages, as more as possible and start to make friends on those sites.

3. Create unique posting daily and share it through social sites.

4. Search for any site or desktop applications from which you can share on multiple social sites automatically, which save your social sites sharing time. 


5. Search for some URL shorten service site and make shortcut URL of your blog or site as more as possible and then make the list of your shortcut URLs. 


6. Submit your blog or site on search engines. Submit also the profile pages URL of social sites and shortcut URLs you have made. Note: Some of the search engine denied to submit profile page, if so, skip them. 

Before submitting the site on the search engine you must prepare the appropriate description and Meta keywords of the blog or site. 

While submitting the URL of your blog or site, you must write description and Meta keywords which you have created. 

7. Search for any sites or desktop applications which can submit on number of search engine automatically.


8. Submit your blog or site, profile of social bookmarking sites and shortcut URLs of your site on the high PR directory sites. 


9. Search for any site or application which can submit on multiple sites automatically. 

10. Search for some article submission sites and submit your unique article daily. 

11. Make daily schedule to do all these work. A sample daily schedule is given below. 

12. Sign up for different PPC advertising websites. Place the advertisement which you get from there on the form of html codes and start to earn by displaying advertisement on your blog or site.


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