Which of the following are the advantages with the communication Networking known as “Integrated Services Digital Network (ISDN)” ?
(i) Fast digital connectivity and the capability of providing for the integration of voice, video and other services
(ii) It accelerates the flow of information
(iii) It provide an opportunity to share hardware and software by several users
(iv) It provides the facilities of call waiting, diversion of calls, and conference calls
(v) It provide the facility for controlling data base access and other security requirements
1. i, ii, v are correct
2. i, ii, iv are correct
3. ii, iii, v are correct
4. iii, iv, v are correct