A DHCP server’s IP address is 192.168.1.1.

This DHCP server supports clients in two different class C networks. A DHCP client in one of the networks has an IP address of 192.168.2.50. A DHCP client in the other network has an IP address of 192.168.30.50.

Which two files must exist on the DHCP server to support these clients? (Choose two.)

Your users complain that they can NOT log into the newly installed compute server. You check the log files and see this line:

Jan 28 11:36:33 compserv in.telnetd[1430]: [ID 913506 daemon.warning] refused connect from
129.169.214.218 (name/address mismatch)

Which is a cause of this message?

Given the following DHCP debug output:

3cdbd723: Datagram received on network device: hme0
3cdbd723: Reserved offer: 192.1.29.72
3cdbd724: Unicasting datagram to 192.1.29.72 address.

3cdbd724: Adding ARP entry: 192.1.29.72 == 080020CBCBCB
3cdbd724: Updated offer: 192.1.29.72
3cdbd725: Datagram received on network device: hme0
3cdbd725: Client: 01080020CBCBCB maps to IP: 192.1.29.72
3cdbd725: Unicasting datagram to 192.1.29.72 address.

3cdbd725: Adding ARP entry: 192.1.29.72 == 080020CBCBCB

Which two statements are true? (Choose two.)

A DNS server is successfully providing information related to zones for which it is authoritative. A problem occurs when it attempts to resolve addresses in zones for which it is not authoritative. What is a cause of this problem?

The responses that a DNS server returns to DNS client requests are classified as either authoritative or non-authoritative. What are two characteristics of non-authoritative responses? (Choose two.)

You configure an NTP server to use its local undisciplined clock and also an external server at address 192.20.20.1. Additionally, you create a fudge line:

fudge 127.127.1.0 stratum 12

Which is the purpose of the fudge line?

On a system of your network, which is an NTP client, the output of the system administration command ntpq -p (standard Network Time Protocol query program) is:

remote refid st t when poll reach delay offset disp
===================================================================
*sun-roma02 sunital 4 m 26 64 377 0.98 0.340 1.50

Which two statements are true? (Choose two.)

A network administrator correctly configures a DHCP server that is serving JumpStart and non-JumpStart clients. One of the DHCP clients asks for an IP address. It does NOT ask for any other parameters such as subnet mask, router, and encapsulated vendor options. A variable must be modified in the /etc/default/dhcpagent file on the client to configure the DHCP client’s dhcpagent to request additional networking information from the DHCP server. Which variable must be modified?

The /var/adm/messages file on an NTP client shows many time reset (step) messages at regular intervals with the sign of the step alternating positive and negative with an amount that is nearly the same.

For example:
Jan 26 11:10:56 crater xntpd[6079]: time reset (step) 0.312899 s Jan 26 11:17:18 crater xntpd[6079]: time reset (step) -0.318915 s Jan 26 11:22:40 crater xntpd[6079]: time reset (step) 0.312903 s Jan 26 11:29:02 crater xntpd[6079]: time reset (step) -0.318887 s Jan 26 11:34:24 crater xntpd[6079]: time reset (step) 0.313149 s Jan 26 11:40:46 crater xntpd[6079]: time reset (step) -0.319057 s Jan 26 11:46:09 crater xntpd[6079]: time reset (step) 0.312988 s

Which three commands are useful in determining the cause of the messages? (Choose three.)

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.)