WHAT IS THE DIff Between candidate key and primary key?

0 Answers  

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the transfer of data from cpu to peripheral devices of a computer is achieved thru?

2 Answers   iNautix,

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why this for loop doesn't work . int i; for(i=2;i=0;i--) { cout<<i; }

0 Answers   Wipro,

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what type of questions pannel ask to the intervier? plz i want questions about computer engineering? System security subject.

0 Answers  

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what is dedicated earthing??????

3 Answers   APC, ElectroMech, Emerson, JLL, JP Group, Tata Liebert,

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Net app interview questions ============================ . Storage Fundamentals: - what is Raid? What are different kind of Raids? - Difference between all of Raids , Advantage of one raid over other - What are FCP & ISCSI, Difference between them. - FC Topologies, Iscsi commands - How to mount a Lun on Windows/Linux - NFS and CIFS - Difference between SAN, NAS and DAS - Different Backup methodologies, Snapshot, mirror, Disaster Recovery, High Availability, Cluster concepts 2. Network Fundamentals: - TCP/IP and ISO/OSI layers - What is DHCP, DNS, SNMP, Router, Hub, Switch, HTTPS , HTTP, telnet , ssh, rsh - Different SNMP versions (V1, V2, V3) - SNMP traps - Ipv4 and Ipv6 addressing 3. Database: - SQL queries, Joins (may ask you to write queries with complex joins) - Aggregate functions - Schemas, Tables, views (create, delete, alter, drop etc) 4. Testing - Bug tracking process, Types of Bugs - Difference between priority and Severity of Bug - Your best bug , what will you do when your bug is not fixed/rejected etc. - What is Functionality/Sanity/Stress/Upgrade & revert/Performance/negative/Release test/regression tests. How you have done these in your past projects. - Black box testing, grey box testing - May ask to write test cases on a given scenario - What is test plan and test summary/strategy document. Different sections in these documents. - SDLC, Test Lifecycle and approach to test a product (Given a product what different kind of testing you will do) 5. Perl ( in addition, you may be asked to write scripts on below areas) - Regular expressions - File/Directory Handling - Scalars, Arrays and Hashes - Packages and Modules - Use and require statements - Go through Net::Telnet, Net::SNMP, Net::SSH modules in perl

0 Answers   NetApp,

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what is b tree

0 Answers   HCL,

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Question 1 A low-level format received by a floppy disk does what? a. Adds a root directory b. Includes a FAT (File Allocation Table) c. Stores 720K d. Creates a structure of sectors, tracks, & cluster. Question 2 A user is complaining of problems. You find that upon startup, the IBM machine give two beeps alerting you to a POST error. Error code 301 shows. What is wrong with this machine? a. There is a monitor error. b. There is a keyboard error. c. This is not a POST error. Two beeps indicates a motherboard error. d. There is a serial card error. Question 3 What is this an example of? A. A 30-pin SIMM B. A 72-pin SIMM C. A 168-pin DIMM D. C-RIMM Question 4 Bridges are capable of which? a. Expanding the length of a network segment. b. Acting as a firewall. c. Segmenting networks. d. Communication of computers on a LAN. Question 5 Which is true of a female DB 15-pin video port? a. It has 2 rows of 5 pinholes. b. It has 3 rows of 5 pinholes. c. It has one row of 8 pinholes and one row of 7 pinholes d. It has one row of 6 pinholes and one row of 9 pinholes Question 6 You have just installed two hard drives into the same machine. One is set up as the slave and both are on the same IDE channel. You notice that the drive's LED light is constantly lit on the slave drive. What do you need to do to fix this? a. Troubleshoot the slave drive by reconfiguring the slave to be the master, removing the original master drive, then rebooting. b. Disable the secondary controller in the BIOS. c. Manually enter the drive settings on the BIOS. d. Install more memory. Question 7 SVGA and Ultra VGA are two distinct video standards. True or False? a. True. b. False. Question 8 SVGA is represented by all of the following resolutions except: a. 1600 x 1200 b. 800 x 600 c. 640 x 480 d. 1280 x 1024 Question 9 Which is true of an Active Matrix LCD? a. The LCD is divided into two halves. b. The LCD is divided into two halves. c. Each pixel is constantly refreshed. d. The pixels are fixed. e. It uses more electricity. f. None of the above. Question 10 What are the correct stages and order of the EP laser printing process? a. Cleaning, Writing, Conditioning, Developing, Fusing, Transferring, and End of Cycle b. Cleaning, Conditioning, Writing, Developing, Transferring, Fusing, & End of Cycle c. Erasing, Writing, Heating, Developing, Fusing, Transferring, & End of Cycle d. Conditioning, Erasing, Writing, Developing, Fusing, Transferring, & End of Cycle Question 11 Choose the correct associations (pick 2). a. 802.4 – Internetworking b. 802.6 - Metropolitan area network c. 802.9 - Integrated voice and data networks d. 802. 11 - Token ring LAN Question 12 What is the function of a Layer 2 switch ? a. forwards data based on logical addressing b. duplicates the electrical signal of each frame to every port c. learns the port assigned to a host by examining the destination MAC address d. determines which interface is used to forward a frame based on the destination MAC address. Question 13 An administrator would like to connect ten workstations on a 192.168.0.0/24 network. The device selected by the administrator must allow connectivity between hosts without sharing bandwidth. Which device would be appropriate? a. Hub b. Router c. Switch d. Repeater Question 14 Which devices are primarily used to extend cable segments within a collision domain by regenerating the data signals? (Choose two.) a. switch b. repeater c. router d. bridge e. hub Question 15 Which networking devices use the MAC address to make forwarding decisions? (Choose two.) a. NIC b. bridge c. hub d. switch e. repeater Software : 1. Briefly describe the data type conversion feature of Oracle SQL and PL/SQL. 2. What is INDEX? Describe its benefits. 3. Write down the name of five most popular RDBMS. 4. What is UML? Write some Diagram name. 5. What is HTML and XML? 6. What is CSS and AJAX and their benefits? 7. What is software quality assurance? 8. Describe components of a typical test plan? 9. What is the difference between QC and QA? 10. What is Verification and Validation? 11. What diff b/w black box and white box testing? 12. What is the difference between System Testing, Integration Testing & System Integration Testing? ATI Limited Question Paper Duration Time : 1 Hour and 30 Minutes Question 1 A low-level format received by a floppy disk does what? a. Adds a root directory b. Includes a FAT (File Allocation Table) c. Stores 720K d. Creates a structure of sectors, tracks, & cluster. Question 2 A user is complaining of problems. You find that upon startup, the IBM machine give two beeps alerting you to a POST error. Error code 301 shows. What is wrong with this machine? a. There is a monitor error. b. There is a keyboard error. c. This is not a POST error. Two beeps indicates a motherboard error. d. There is a serial card error. Question 3 What is this an example of? A. A 30-pin SIMM B. A 72-pin SIMM C. A 168-pin DIMM D. C-RIMM Question 4 Bridges are capable of which? a. Expanding the length of a network segment. b. Acting as a firewall. c. Segmenting networks. d. Communication of computers on a LAN. Question 5 Which is true of a female DB 15-pin video port? a. It has 2 rows of 5 pinholes. b. It has 3 rows of 5 pinholes. c. It has one row of 8 pinholes and one row of 7 pinholes d. It has one row of 6 pinholes and one row of 9 pinholes Question 6 You have just installed two hard drives into the same machine. One is set up as the slave and both are on the same IDE channel. You notice that the drive's LED light is constantly lit on the slave drive. What do you need to do to fix this? a. Troubleshoot the slave drive by reconfiguring the slave to be the master, removing the original master drive, then rebooting. b. Disable the secondary controller in the BIOS. c. Manually enter the drive settings on the BIOS. d. Install more memory. Question 7 SVGA and Ultra VGA are two distinct video standards. True or False? a. True. b. False. Question 8 SVGA is represented by all of the following resolutions except: a. 1600 x 1200 b. 800 x 600 c. 640 x 480 d. 1280 x 1024 Question 9 Which is true of an Active Matrix LCD? a. The LCD is divided into two halves. b. The LCD is divided into two halves. c. Each pixel is constantly refreshed. d. The pixels are fixed. e. It uses more electricity. f. None of the above. Question 10 What are the correct stages and order of the EP laser printing process? a. Cleaning, Writing, Conditioning, Developing, Fusing, Transferring, and End of Cycle b. Cleaning, Conditioning, Writing, Developing, Transferring, Fusing, & End of Cycle c. Erasing, Writing, Heating, Developing, Fusing, Transferring, & End of Cycle d. Conditioning, Erasing, Writing, Developing, Fusing, Transferring, & End of Cycle Question 11 Choose the correct associations (pick 2). a. 802.4 – Internetworking b. 802.6 - Metropolitan area network c. 802.9 - Integrated voice and data networks d. 802. 11 - Token ring LAN Question 12 What is the function of a Layer 2 switch ? a. forwards data based on logical addressing b. duplicates the electrical signal of each frame to every port c. learns the port assigned to a host by examining the destination MAC address d. determines which interface is used to forward a frame based on the destination MAC address. Question 13 An administrator would like to connect ten workstations on a 192.168.0.0/24 network. The device selected by the administrator must allow connectivity between hosts without sharing bandwidth. Which device would be appropriate? a. Hub b. Router c. Switch d. Repeater Question 14 Which devices are primarily used to extend cable segments within a collision domain by regenerating the data signals? (Choose two.) a. switch b. repeater c. router d. bridge e. hub Question 15 Which networking devices use the MAC address to make forwarding decisions? (Choose two.) a. NIC b. bridge c. hub d. switch e. repeater Software : 1. Briefly describe the data type conversion feature of Oracle SQL and PL/SQL. 2. What is INDEX? Describe its benefits. 3. Write down the name of five most popular RDBMS. 4. What is UML? Write some Diagram name. 5. What is HTML and XML? 6. What is CSS and AJAX and their benefits? 7. What is software quality assurance? 8. Describe components of a typical test plan? 9. What is the difference between QC and QA? 10. What is Verification and Validation? 11. What diff b/w black box and white box testing? 12. What is the difference between System Testing, Integration Testing & System Integration Testing?

1 Answers   Aptech, ATI, FH,

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PLC Training in chennai ? Best PLC Training center in chennai?

1 Answers  

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program for inter process communicatin using message sharing in unix c

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if all user defined constructor of a class made private,can we create an object of that class?justify your answer with an example.

2 Answers  

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I want to prepare for PSU's bt i dont know how many PSU's are open for computer science students and what is the competition level for these. So if anybody knows this please guide me through this.

0 Answers  

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