Question 20 Not yet answered Marked out of 1.00 1.1-2 What is the Internet (2)? Which of the following descriptions below correspond to a "services" view of the Internet? P Flag question Select one or more: a. A platform for building network applications. b. A place I go for information, entertainment, and to communicate with people. O c. A collection of billions of computing devices, and packet switches interconnected by links. O d. A collection of hardware and software components executing protocols that define the format and the order of messages exchanged between two or more communicating entities, as well as the actions taken on the transmission and/or receipt of a message or other event. e. A "network of networks". Question 21 Not yet answered Marked out of 1.00 1.3-3 Packet switching versus circuit switching (2). Which of the characteristics below are associated with the technique of circuitswitching? P Flag question Select one or more: O a. This technique is used in the Internet. O b. Congestion loss and variable end-end delays are possible with this technique. c. Frequency Division Multiplexing (FDM) and Time Division Multiplexing (TDM) are two approaches for implementing this technique. d. Reserves resources needed for a call from source to destination. e. This technique was the basis for the telephone call switching during the 20th century and into the beginning of this current century. Of. Data may be queued before being transmitted due to other user's data that's also queueing for transmission g. Resources are used on demand, not reserved in advance