单选题Telneting from any machine on the network is taking 75 seconds. Which of the following procedures should be checked to correct the error?（）A Check /etc/hosts. B Check /etc/resolv.conf. C Check for packet errors. D Check to see if the master server is up.
单选题
Telneting from any machine on the network is taking 75 seconds. Which of the following procedures should be checked to correct the error?（）
A
Check /etc/hosts.
B
Check /etc/resolv.conf.
C
Check for packet errors.
D
Check to see if the master server is up.
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