Which of the following devices would MOST likely require a serial adapter to be installed on a modern PC?
A. External modem
B. TV tuner
C. Mouse
D. Keyboard
Answer: A. External modem
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Case 7-1 Joseph is working on several windows at a time. He requires good computer skills and knowledge to be able to work on all of them efficiently. With multiple File Explorer windows open, Joseph clicks on the miniature images, which appear when he clicks the corresponding button on the taskbar, to switch to the window that he wants to work on next. These miniature images are referred to as _____.
A. ?watermarks B. ?thumbnails C. ?add-ons D. ?indexers
What Layer 2 protocol can present a security risk when enabled on an untrusted interface?
A. CDP B. Frame Relay C. HDLC D. PPP
Compare traceroute and mtr.
What will be an ideal response?
What format is used for the flat plaintext files some e-mail systems use for message storage?
a. POP3 b. mbox c. css d. SMTP