A DNS server is experiencing problems resolving hosts. Your troubleshooting efforts identify the following SOA record as the cause of the problem:

@ soa in host1.abc.com. root.abc.com. (
1002 ; Version number
43200 ; Refresh after 12 hours
3600 ; Retry after 1 hour
604800 ; Expire after 1 week
3600) ; Minimum TTL of 1 hr

What is causing the error?

Which two commands can be used to configure a new DHCP server? (Choose two.)

You are asked to configure a DHCP server for your office. The DHCP server will be used to assign a dynamic IP address to workstations that are occasionally moved between networks and are left powered on 24 hours a day. Which is a suitable DHCP lease time to configure?

A DHCP client is configured with the RELEASE_ON_SIGTERM=yes parameter. Which two actions force a DHCP client to relinquish the IP address it obtained through DHCP on hme0? (Choose two.)

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?