Topic :: Digital
When transmitting digital signals is it necessary to transmit some harmonics in addition to fundamental frequency?
2 13221The Integrated Services Digital Network (ISDN) Basic Rate Interface (BRI) provides which of the following? A.) 1.544 Mbps B.) 23B + 1D Channel C.) 24B + 1D Channel D.) 2B + 1D Channel E.) 23B + the Disney Channel
2 4048What are three benefits of Integrated Services Digital Network (ISDN) (Choose three) A. PVCs are faster and more reliable B. No specialized equipment is required C. Data transfer is faster than typical modems D. Call setup is faster than with standard telephone service E. It carries many types of data tramp such as voice video and data
1 5871Which two statements about integrated services digital network (ISDN) are true? A. ISDN provides data only capability B. ISDN provides an integrated voice/data capability C. The ISDN standards define the hardware and call setup schemes for end the end digital connectivity D. Users receive more bandwidth on WANS with a leased lin of 56 Cops than with multiple B channels
1 4257To affix a digital signature to a message, the sender must first create a message digest by applying a cryptographic hashing algorithm against: A. the entire message and thereafter enciphering the message digest using the sender's private key. B. any arbitrary part of the message and thereafter enciphering the message digest using the sender's private key. C. the entire message and thereafter enciphering the message using the sender's private key. D. the entire message and thereafter enciphering the message along with the message digest using the sender's private key.
1 7856A sequence of bits appended to a digital document that is used to secure an e-mail sent through the Internet is called a: A. digest signature. B. electronic signature. C. digital signature. D. hash signature.
1 7396A single digitally signed instruction was given to a financial institution to credit a customer's account. The financial institution received the instruction three times and credited the account three times. Which of the following would be the MOST appropriate control against such multiple credits? A. Encrypting the hash of the payment instruction with the public key of the financial institution. B. Affixing a time stamp to the instruction and using it to check for duplicate payments. C. Encrypting the hash of the payment instruction with the private key of the instructor. D. Affixing a time stamp to the hash of the instruction before being digitally signed by the instructor.
1 5938The feature of a digital signature that ensures the sender cannot later deny generating and sending the message is: A. data integrity. B. authentication. C. nonrepudiation. D. replay protection.
1 4673Digital signatures require the: A. signer to have a public key and the receiver to have a private key. B. signer to have a private key and the receiver to have a public key. C. signer and receiver to have a public key. D. signer and receiver to have a private key.
1 3535The PRIMARY reason for using digital signatures is to ensure data: A. confidentiality. B. integrity. C. availability. D. timeliness.
1 10456Which of the following manages the digital certificate life cycle to ensure adequate security and controls exist in digital signature applications related to e-commerce? A. Registration authority B. Certification authority C. Certification relocation list D. Certification practice statement
1 4557
What role do you see for the use of authentication processes such as digital signatures in helping to maintain version control?
What are digital certificates ?
How are digital certificates used ?
How is RSA used for authentication and digital signatures in practice ?
What is a digital signature and what is authentication ?
What is a digital envelope ?
What is digital timestamping ?
Write a program to generate a pulse width frequency of your choise,which can be variable by using the digital port of your processor
I m Abdullah Ansari compleated MCA from Jamia Hamdard,i have appeared the test of IBM on 2 august at oxford college of engineering Bangalore.waiting for hr round.. This is the first round for IBM.02/08/08 Paper consists of 4 sections 15 questions from matrices(time very less but no negative marking). 25 questions from series completion section (this section is very easy but negative marking) 15 questions from aptitude(little bit tough time limit 15 minute negative marking) 4th section is from computer science (c,c++,operating system,digital electronics ,basic question..) result came at 3 o'clock.i was selected... In interview they asked questions like 1 they asked about final yr project.. 2 what are dynamic and static memory location? 3 linked list and array difference between them. 4 what is function ? what is difference betwen function and inline function? 5 about structure 6 about binary tree, traversal, call by value. 7 storage class and many more basic questions..
what are essential components of digital computer? discuss the function of each components. draw the block diagram of a computer showing its essential components
what is the difference between online & offline caliberation of KWH meters. Can Digital meters be caliberated
define digital electronic
I am having a Phoenix digital to modbus converter. The o/p of the same is connected to flow computer FB407. But the digital signals are updated only after one minute in the flow computer. what may be the cause of delay in communication? Flow computer is having a scanning period of less than 1 sec.
how to set the time in digital timer ?
how to measure the current by compact digital equipment with dislay which fit inside any equipment
