F5-BIG-IP v10.x LTM Essentials V10.x Set 2

1.

As a part of the Setup Utility, the administrator sets the host name for the BIG-IP. What would be the result if the two systems in a redundant pair were set to the same host name?

Host names do not matter in redundant pair communication. In a redundant pair, the two systems will always have the same host name. The parameter issynchronized between the systems. The first time the systems are synchronized the receiving system will be assigned the same self-IPaddresses as the source system. When the administrator attempts to access the configuration utility using the host name, they will alwaysconnect to the active system.

2.

When network fail-over is enabled, which of the following is true?

The fail-over cable status is ignored. Fail-over is determined by the network status only. Either a network failure or loss of voltage across the fail-over cable will cause a fail-over. A network failure will not cause a fail-over as long as there is a voltage across the fail-over cable. The presence or absence of voltage over the fail-over cable takes precedence over network fail-over.

3.

Where is connection mirroring configured?

It an option within a TCP profile. It is an optional feature of each pool. It is not configured; it is default behavior. It is an optional feature of each virtual server.

4.

Which statement is true regarding fail-over?

Hardware fail-over is disabled by default. Hardware fail-over can be used in conjunction with network failover. If the hardware fail-over cable is disconnected, both BIG-IP devices will always assume the active role. By default, hardware fail-over detects voltage across the fail-over cable and monitors traffic across theinternal VLAN.

5.

Where is persistence mirroring configured?

It is always enabled. It is part of a pool definition. It is part of a profile definition. It is part of a virtual server definition.

6.

What is the purpose of MAC masquerading?

to prevent ARP cache errors to minimize ARP entries on routers to minimize connection loss due to ARP cacherefresh delays to allow both BIG-IP devices to simultaneously use the same MAC address

7.

Which process or system can be monitored by the BIG-IP system and used as a fail-over trigger in a redundant pair configuration?

bandwidth utilization duplicate IP address CPU utilization percentage VLAN communication ability

8.

Assuming there are open connections through an active system's NAT and a fail-over occurs, by default, what happens to those connections?

All open connections will be lost. All open connections will be maintained.

The "Mirror" option must be chosen on the NAT and the setting synchronized prior to the connectionestablishment.

Long-lived connections such as Telnet and FTP will be maintained while short-lived connections suchas HTTP will be lost. All open connections are lost, but new connections are initiated by the newly active BIG-IP, resulting inminimal client downtime.

9.

A virtual server is defined per the charts. The last five client connections were to members C, D, A, B, B. Given the conditions shown in the above graphic, if a client with IP address 205.12.45.52 opens a connection to the virtual server, which member will be used for the connection?

172.16.20.1:80 172.16.20.2:80 172.16.20.3:80 172.16.20.4:80 172.16.20.5:80

10.

Under what condition must an appliance license be reactivated?

Licenses only have to be reactivated for RMAs - no other situations. Licenses generally have to be reactivated during system software upgrades. Licenses only have to be reactivated when new features are added (IPv6, Routing Modules, etc) - noother situations. Never. Licenses are permanent for the platform regardless the version of software installed.

F5-BIG-IP v10.x LTM Essentials V10.x Set 2

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F5-BIG-IP v10.x LTM Essentials V10.x Set 2

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