单项选择题
A.Coaxial B.Cat 1 UTP C.Cat 3 UTP D.Cat 5 UTP
Whichofthefollowingfilescontainsthesettingsforthesystem...
单项选择题Which of the following files contains the settings for the system’s DNS domain name and DNS servers？（）
A./etc/hosts B./etc/resolv.conf C./etc/netsvc.conf D./etc/named.boot
WhichofthefollowingoptionsbestjustifieswhyaDNSserversho...
单项选择题Which of the following options best justifies why a DNS server should be run in a large network system？（）
A.To use ftp and telnet B.To perform NFS mounts C.To make /etc/hosts files unnecessary D.To reduce network traffic and save bandwidth
WhendividinganexistingClassBnetworkinto2subnetsof32，766...
单项选择题When dividing an existing Class B network into 2 subnets of 32，766 hosts each， which of the following subnet masks should be used？（）
A.128.0.0.0 B.255.128.0.0 C.255.254.0.0 D.255.255.128.0
