单项选择题

Which of the following authentication protocols uses certificates to negotiate access to the network?（）

A.PAP
B.CHAP
C.EAP-TLS
D.Kerberos

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单项选择题

Which of the following tools is used to show the active routes on a workstation?（）

A.nbstat
B.arp -a
C.arp ping
D.netstat -r

单项选择题

A network technician is troubleshooting a network issue that has just been reported. Which of thefollowing troubleshooting steps should the technician take FIRST to help resolve this issue?（）

A.Record the solution in the appropriate logs for future use.
B.Ask the user who reported the issue what past documentation they have.
C.Ask the user who reported the issue to explain the symptoms in detail.
D.Record what steps should be taken to resolve the issue.

多项选择题

PPTP is a combination of which of the following protocols? (Select TWO).（）

A.PPP
B.TCP/IP
C.TCP
D.POP3
E.PPPoE