单项选择题
A. data link B. network C. physical D. transport
A. PSK B. AH C. MD5 D. ESP
A. show frame-relay map B. show frame-relay lmi C. show inter serial D. show frame-relay pvc
A. B514:82C3:0029::EC7A:0000:EC72 B. B514:82C3:0029:EC7A:EC72 C. B514:82C3::0029:EC7A:0:EC72 D. B514:82C3::0029:EC7A:EC72
A. They run a spell check on host names to ensure accurate routing B. They convert domain names into IP address C. Given an IP address,they determine the name of the host that is sought D. They map individual hosts to their specific IP addresses
A. VTP B. 802.1Q C. RSTP D. STP
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