Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network. It was first defined in 1988 in the CCITT red book. Prior to ISDN, the telephone system was viewed as a way to transport voice, with some special services available for data. The key feature of ISDN is that it integrates speech and data on the same lines, adding features that were not available in the classic telephone system. The ISDN standards define several kinds of access interfaces, such as Basic Rate Interface (BRI), Primary Rate Interface (PRI), Narrowband ISDN (N-ISDN), and Broadband ISDN (B-ISDN).

ISDN is a circuit-switched telephone network system, which also provides access to packet switched networks, designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in potentially better voice quality than an analog phone can provide. It offers circuit-switched connections (for either voice or data), and packet-switched connections (for data), in increments of 64 kilobit/s. In some countries, ISDN found major market application for Internet access, in which ISDN typically provides a maximum of 128 kbit/s bandwidth in both upstream and downstream directions. Channel bonding can achieve a greater data rate; typically the ISDN B-channels of three or four BRIs (six to eight 64 kbit/s channels) are bonded. What are the answers to this following set of questions: 1. When was ISDN first defined?
2. Where?
3. What does it stand for?
4. Does it support video?
5. What else?
6. What is its key feature?
7. was this available before?
8. What does BRI stand for?
9. What kind of interface is BRI?
10. Can you name other kinds?
11. What are the name of two others?
12. What kind of switches does ISDN use?
13. Can you utilize any others?
14. Which one?
15. What does that do?
16. What kind of wire is used?
17. Does this lead to better or worse quality?
18. How many kilobits are utilized?
19. Whats the max bandwidth?
20. Is that for both directions?
21. What can result in a higher rate?
22. How many are bonded?
Answer: 1. 1988
2. in the CCITT red book
3. Integrated Services Digital Network
4. yes
5. speech
6. it integrates speech and data on the same lines
7. no
8. Basic Rate Interface
9. access interface
10. Yes
11. Narrowband ISDN (N-ISDN), and Broadband ISDN (B-ISDN)
12. circuit-switches
13. Yes
14. packet-switched
15. carries data
16. copper
17. Better
18. 64 kilobit/s
19. 128 kbit/s
20. yes
21. Channel bonding
22. three or four

A database management system (DBMS) is a computer software application that interacts with the user, other applications, and the database itself to capture and analyze data. A general-purpose DBMS is designed to allow the definition, creation, querying, update, and administration of databases. Well-known DBMSs include MySQL, PostgreSQL, Microsoft SQL Server, Oracle, Sybase, SAP HANA, and IBM DB2. A database is not generally portable across different DBMSs, but different DBMS can interoperate by using standards such as SQL and ODBC or JDBC to allow a single application to work with more than one DBMS. Database management systems are often classified according to the database model that they support; the most popular database systems since the 1980s have all supported the relational model as represented by the SQL language.[disputed discuss] Sometimes a DBMS is loosely referred to as a 'database'.

Formally, a "database" refers to a set of related data and the way it is organized. Access to these data is usually provided by a "database management system" (DBMS) consisting of an integrated set of computer software that allows users to interact with one or more databases and provides access to all of the data contained in the database (although restrictions may exist that limit access to particular data). The DBMS provides various functions that allow entry, storage and retrieval of large quantities of information and provides ways to manage how that information is organized. What are the answers to this following set of questions: 1. What's a DBMS?
2. And what does it stand for?
3. What did "database" use to mean?
4. What is one well-known DBMS?
5. What is another?
6. How many are in total?
7. Name one of the standards used to interoperate DBMSs?
8. Name another?
9. Can you remember another popular DBMS?
10. One more maybe?
11. How are Database management systems generally classified?
12. What is the point of interoperating standards?
13. Name one thing provided by DBMS functions?
14. Can you name another?
15. Is this for small bits of info?
Answer: 1. a computer software application that interacts with the user
2. database management system
3. a set of related data and the way it is organized
4. MySQL
5. PostgreSQL
6. Seven
7. SQL
8. JDBC
9. Microsoft SQL Server
10. Oracle
11. according to the database model
12. to allow a single application to work with more than one DBMS
13. allow entry
14. to manage how that information is organized
15. no

Michael and Derek are good friends, but they like to pull each other's leg sometimes. One day during the holidays they decided to go to London together. They went to the station and bought their tickets. When the train came in, Michael broaden in first and without knowing it, dropped his ticket in the platform as he got into the carriage . Derek, who was close behind saw the ticket fall and quickly picked it up. Without a word to his friend, he put it in his pocket. After they had been in the train a little while, they heard the ticket inspector coming down the corridor, shouting, "tickets, please!" Michael looked for his and of course couldn't find it. "Oh, dear, I can't find my ticket, Derek," he said. "Have another look, Michael, it must be somewhere," said Derek. "No, I can't find it anywhere. What shall I do?" "Perhaps you had better hide under the seat, then the inspector won't know you are here." So Michael crawled under the seat as fast as he could and lay perfectly still. Presently the door opened and in came the inspector, "Tickers please!" he said. Derek handed him two tickets and said, "This is mine. The other belongs to my friend, who prefers to travel under the seat." What are the answers to this following set of questions: 1. who are good friends
2. Where did they buyt tickets
3. where was the ticket dropped
4. who picked up the ticket
5. who shouted tickets please
6. who hide under the seat
7. who handed the tickets over
8. who said have another look
9. where did they decide to go
10. during what time did they go
Answer:
1. Michael and Derek are good friends
2. The station.
3. In the platform.
4. Derek.
5. The ticket inspector.
6. Michael.
7. Derek.
8. Derek.
9. London.
10. During the holidays.