1、         MIDI enables people to use multimedia computers and electronic musical instruments. There are actually three components to MIDI, the communications "Protocol", the Hardware Interface and a distribution format called "Standard MIDI Files". In the context of the WWW, the most interesting component is the Audio Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol messages are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.

2、         Certificates are digital documents attesting to the binding of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to impersonate someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a Certificate also contains an expiration date, the name of the CA that issued the Certificate, a serial number, and perhaps other information. Most importantly, it contains the digital signature of the certificate issuer. The most widely accepted format for certificates is X.509, thus, Certificates can be read or written by any application complying with X.509.

網友二回顧

5 不對

6 并歸

16 不反應并行性

17 A

18 D

25  好像沒有mpeg－3

30  路由器 如果交換機對那么網橋也對，他們都在數據鏈路層

33  ABCD。。。。順序是這樣

34 2T(n-1)+1   題號可能記錯了

35  15

37 先選擇再連接再投影吧

43 75

45  v[3][6]   9+8+3=20