Which of the following is used to house FTP servers, mail servers, and web servers so that people on the Internet can access them but cannot access any other of the organization's servers?
A. DMZ
B. Intranet
C. Subnet
D. VLAN
A. A DMZ is used to hold servers that will be accessed by people on the Internet. This way, those external users will not have access to the organization's LAN.
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Which of the following is NOT true about including audio files in presentations?
A) If the audio file is too long, you should select a new audio file. B) You can set the audio to play across slides so a background song continues to play as the user advances the slides. C) Audio can be looped so it continues to play until it is stopped. D) The audio file can be set to fade in at the beginning of the playback and fade out at the end.
A(n) ____________ is a column that contains unique values generated by the DBMS, usually using a counter.
a. primary key b. identity column c. key column d. generated field