920-124 Ethernet Switching Practice Exam

Nortel ™

920-124 Ethernet Switching

Note 1: 920-124 Exhibit and all related diagrams are not shown in demo questions.
Note 2: 920-124 Answers are not shown in demo questions.
Exhibits and Answers are only provided in the Full Version.

Demo Question 1.

Given the following network information: * EliteCertify.com needs to perform Layer 2 aggregation of three BayStack 450 switch stacks. * All connections from the stacks to the aggregation switch will be via two Gigabite Ethernet links configured in an MLT. * All uplinks from the aggregation switch will be to a Passport 8600 via redundant Gigabit Ethernet connections. What are two benefits of using a BayStack 380-24F for Layer 2 aggregation in this situation? (Choose two)

A. The Bay Stack 380-24F can be stacked if increased capacity is required.
B. The BayStack 380-24F provides high-density layer 2 aggregation for Gigabit connections.
C. The BayStack 380-24F supports 1000BASE. LX,-ZX,-XD and CWDM GBICs for flexibility in uplink connectivity.
D. The BayStack 380-24F supports IP QoS with Differentiated Services (DiffServ) to ensure efficient bandwidth utlization.

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Answer: B, C

Explanation: The two benefits for using a BayStack 380-24F is with the configuration lists is that it provides high-density layer 2 aggregation for gigabit connections and it supports 1000BASE. LX,-SX,-ZX,-XD and CWDM GBICs for flexibility in the uplink connectivity. The BayStack 380-24F can not be stacked and does not support QoS with DiffServ.