A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent?
Options: (A)Ability of two or more systems, to exchange information and to use the information that has been exchanged. (B) Time taken to respond to an event. (C) Either the hazard not arises, if arise; it will not result in an accident. (D) None of these 22
Before any changes to database structure are attempted one should first:
Options: clearly understand the current structure and contents of the database only., test any changes on a test database only., create a complete backup of the operational database only., All of the above should be done.
2.In memory management : A- Fetch Policy BCleaning Policy C- Placement Policy: 1- It determines when a modified page should be written out to secondary memory. 2- It determines when a page should be bought into main memory. 3- It determines where in real memory a process piece is to be reside.
Options: (A)A â€“ 1, B â€“ 2, C â€“ 3 (B) A â€“ 2, B â€“ 1, C â€“ 3 (C) A â€“ 2, B â€“ 1, C â€“ 3 (D) A â€“ 3, B â€“ 1, C â€“ 2 9
Options: It was a charter of Rights granted to the Englishmen during 1215 AD by King John II, It was a charter guaranteeing the freedom of the barons, the church and the common man, It is the foundation stone of the rights and liberties of the English people, All of the above
Options: the period in which the moon completes an orbit around the earth, the period in which the moon completes an orbit around the earth and returns to the same positions in the sky, the period of rotation of moon, None of the above
Options: (A)Extent to which a system or component performs a broad range of functions. (B) The objective of an organization to achieve. (C) Methods and techniques for converting data to or from graphic display via computers. (D) None of these 21
Options: (A)Process of estimating the costs associated with software development projects that include the effort, time, and labor required. (B) Overall cost of maintaining a computer system that includes the costs associated with personnel/training/ maintenance of hardware and software/ requirements growth. (C) Overall cost of operating a computer system that includes the costs associated with personnel / training / system operations. (D) Overall cost of a computer system to an organization that includes the costs associated with operating/ maintaining the system, and the lifetime of operational use of the system. 15