Pass the F5 BIG-IP DNS 302 Questions and answers with CertsForce

Explanation

The TMSH displays the failing Server Object as "Offline" when it is not reachable or experiencing issues, indicating that the server is not functioning properly and needs attention.

Domain

iQuery Synchronization issue

Explanation

The correct command to check the allowed services for the Self IPs of the Synchronization group GSLB Objects is "tmsh list /net self allow-service". This command will list all the services that are allowed for the Self IPs in the Synchronization group, providing visibility into the network configuration and ensuring that the necessary services are permitted for proper functionality.

Domain

iQuery Synchronization issue

Explanation

In a TCP client-server zone transfer, the client is typically the Secondary DNS Server. The Secondary DNS Server initiates the zone transfer process by requesting a copy of the zone data from the Primary Master DNS Server to ensure it has an up-to-date copy of the zone information.

The Primary Master DNS Server can also act as the client in a TCP client-server zone transfer scenario. The Primary Master DNS Server may initiate the zone transfer process to send a copy of the zone data to a Secondary DNS Server to ensure data consistency and redundancy in the DNS infrastructure.

Explanation

Explanation

True. The Normal DNS Resolution process of any DNS Record could indeed be performed over a TCP Connection. While DNS typically uses UDP for its queries due to its speed and efficiency, if the response size exceeds the UDP packet size limit (512 bytes), it will switch to using TCP for the query.

Domain

Zone Transfer

Explanation

mycompany.com is the correct choice for the Domain Apex. The Domain Apex is the root domain without any subdomains, and in this case, mycompany.com represents the highest level of the domain hierarchy.

Domain

Zone Transfer

Explanation

The correct option to limit the number of packets that will be captured is "-c ". This option allows the user to specify the exact number of packets to capture before stopping the capture process, providing control over the amount of data collected during the packet capture.

“-Q ”

The correct option to limit the number of packets that will be captured is "-c ". This option allows the user to specify the exact number of packets to capture before stopping the capture process, providing control over the amount of data collected during the packet capture.

Domain

TCPDUMP

Explanation

The Serial number in the preamble portion of the "SOA" Record in Zone Transfer is crucial as it is used to indicate whether the DNS Zone Data has been updated or modified. By comparing the Serial number with the one stored by the secondary DNS server, it can determine if a zone transfer is necessary to synchronize the data.

The Serial number in the preamble portion of the "SOA" Record in Zone Transfer plays a vital role in determining whether there is a need to transfer the actual Zone Data. If the Serial number has changed, it indicates that the zone data has been updated, and a zone transfer is required to ensure that all DNS servers have the most recent information.

Domain

Zone Transfer

Explanation

In the context of DNS, the Start of Authority (SOA) record is created for each master zone file. This record contains essential information about the zone, such as the primary name server, the email address of the administrator responsible for the zone, the serial number to track changes, and other parameters. Therefore, there is a SOA record for each master zone file in DNS.

Domain

F5 GTM concept

Explanation

Configuring the BIGIP DNS System with SNMP Traps allows the system to send notifications to an SNMP manager when specific events occur. This can help in troubleshooting by providing real-time alerts about system issues or performance metrics.

Configuring the BIGIP DNS System with an SNMP Agent enables the system to respond to SNMP queries from an SNMP manager, providing information about the system's status and performance. This can be useful in troubleshooting by allowing the manager to retrieve data for analysis.

The SNMP Agent on the BIGIP DNS System will send SNMP traps to the SNMP Manager when predefined events or conditions occur. This communication between the agent and manager is essential for troubleshooting as it allows for the monitoring and notification of critical system events.

Domain

SNMP