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Exam 400-101 Question id=924 Layer 3 Technologies

router eigrp kyiv ! address-family ipv4 unicast autonomous-system 1 ! af-interface default bandwidth-percent 75 exit-af-interface ! af-interface GigabitEthernet0/0 hello-interval 15 exit-af-interface ! af-interface GigabitEthernet0/1 hold-time 45 exit-af-interface !

What is the hold time for the GigabitEthernet 0/0 interface?

A. 5 seconds
B. 15 seconds
C. 45 seconds
D. 60 seconds
E. 180 seconds

The hold time for the GigabitEthernet 0/0 interface is 15 seconds. Settings for Enhanced Interior Gateway Routing Protocol (EIGRP) named mode are configured under each address family. The af-interface default command enables you to configure settings that apply to all EIGRP interfaces unless a conflicting setting is explicitly configured on the interface. For example, the bandwidth-percent 75 command has been issued under the af-interface default command; therefore, the bandwidth-percent 75 command would apply to all interfaces that are not explicitly configured with the bandwidth-percent command.

In this scenario, the hold-time command has not been configured under the af-interface default command or under the af-interface GigabitEthernet 0/0 command? therefore, the default EIGRP hold time for Ethernet interfaces will be used, which is 15 seconds.
If the hold-time 5 command had been issued under the af-interface default command, the GigabitEthernet 0/0 interface would have had a hold time of five seconds.
However, that setting would not have applied to the GigabitEthernet 0/1 interface, because the hold-time 45command has been issued under the af-interface Ethernet 0/1 command.
The hello interval for the GigabitEthernet 0/0 interface is 15 seconds. Even if a different hello interval command had been issued under the af-interface default command, the GigabitEthernet 0/0 interface would still be configured with a hello interval of 15 seconds because the hello interval 15 command has been explicitly issued on the GigabitEthernet 0/0 interface. By default, the hello interval is five seconds for GigabitEthernet interfaces; therefore, the GigabitEthernet 0/1 interface would have a hello interval of five seconds
because the hello-interval command has not been issued on that interface.
The hold time for the GigabitEthernet 0/0 interface is not 60 seconds. The default hello interval for lowspeed nonbroadcast multiaccess (NBMA) interfaces is 60 seconds.
The hold time for the GigabitEthernet 0/0 interface is not 180 seconds. The default hold time for lowspeed NBMA interfaces is 180 seconds.