#83. A network administrator configured an NTP server and an NTP client, but the client is refusing to synchronize with the server. The client and server clocks have drifted too much for the xntpd daemon to align them, and for the NTP protocol to synchronize them. Which two tools will synchronize the two systems? (Choose two)
#86. A network administrator has correctly configured a DHCP server which is serving JumpStart an non-JumpStart clients. One of the DHCP clients is asking only for an IP address, but NOT for any other parameters such as subnet mask, router, host name, and encapsulated vendor options. A variable must be modified in the /etc/default/dhcpagent file on the client to configure the DHCP clients dhcpagent request additional networking information from the DHCP server. Which variable must be modified?
#87. A DHCP client has been configured with the RELEASE_ON_SIGTERM=yes parameter. Which two actions can be taken to force a DHCP client to relinquish the IP address it has obtained through DHCP on hme0? (Choose two)
#90. A DNS server has MX records which indicate that there are three SMTP relays for the domain gvon.com. A problem occurs, whereby other DNS servers make iterative queries for the MX records every time they are queried by clients. Which two MX lines cause remote DNS servers to refuse to cache the MX record for SMTP relay smtp.goven.com? (Choose two)
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