QUESTION: 165

When should an engineer implement a collapsed-core architecture?

Only when using VSS technology
For small networks with minimal need for growth
For large networks that are connected to multiple remote sites
The access and distribution layers must be on the same device

Answer(s): B

Refer to the exhibit. An engineer assigns IP addressing to the current VLAN with three PCs. The configuration must also account for the expansion of 30 additional VLANS using the same Class C subnet for subnetting and host count. Which command set fulfills the request while reserving address space for the expected growth?

Switch(config)#interface vlan 10 Switch(config-if)#ip address 192.168.0.1 265 255.255.252
Switch(config)#interface vlan 10 Switch(config-if)#ip address 192.168.0.1 255 255.255.248
Switch(config)#interface vlan 10 Switch(config-if)#ip address 192.168.0.1 255 255.255.0
Switch(config)#interface vlan 10 Switch(config-if)#ip address 192.168.0.1 255.255.255.128

Answer(s): B

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QUESTION: 167

A client experiences slow throughput from a server that is directly connected to the core switch in a data center. A network engineer finds minimal latency on connections to the server, but data transfers are unreliable, and the output of the show interfaces counters errors command shows a high FCS-Err count on the interface that is connected to the server. What is the cause of the throughput issue?

a physical cable fault
a speed mismatch
high bandwidth usage
a cable that is too long

Answer(s): A

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QUESTION: 168

What is the difference between 1000BASE-LX/LH and 1000BASE-ZX interfaces?

1000BASE-LX/LH interoperates with multimode and single-mode fiber, and 1000BASE-ZX needs a conditioning patch cable with multimode.
1000BASE-ZX interoperates with dual-rate 100M/1G 10Km SFP over multimode fiber, and 1000BASE-LX/LH supports only single-rate
1000BASE-ZX is supported on links up to 1000km, and 1000BASE-LX/LH operates over links up to 70 km
1000BASE- LX/LH is supported on links up to 10km, and 1000Base-ZX operates over links up to 70 km

Answer(s): D

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