单项选择题

Towhichswitchorswitchesshouldyouprovideredundantlinksin……

To which switch or switches should you provide redundant links in order to achieve high availability with reliable fast convergence in the enterprise campus？（）

A. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 2 link
B. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 3 link
C. to two core switches from redundant distribution switches connected with Layer 2 link
D. to two core switches from redundant distribution switches connected with Layer 3 link
E. to two core switches running Cisco NSF and SSO from two redundant distribution switches running Cisco NSF and SSO

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单项选择题Refer to the exhibit. Which recommended practice is applicable？（）

A. If no core layer is deployed， the design will be easier to scale
B. A dedicated campus core layer should be deployed for connecting three or more buildings
C. If no core layer is deployed， the distribution switches should not be fully meshed
D. A dedicated campus core layer is not needed for connecting fewer than five buildings

单项选择题WhichtechnologyisbestsuitedforthemostscalablemeanstoseparatethedataplaneforaLayersVPN？（）

A. GRE
B. 802 1Q
C. MPLS
D. L2TPv3

单项选择题WhichoftheseisacorrectdescriptionofStatefulSwitchover？（）

A. It will only become active after a software failure
B. It will only become active after a hardware failure
C. It requires that Cisco N3F· be enabled in order to work successfully
D. It synchronizes the MAC·， FIB·， and adjacency tables between Active and Standby Route Processors

多项选择题WhichtwocharacteristicsaretrueofIVRs？（）

A. They are known as fabric routing
B. They cannot span multiple switches
C. Their connectivity is supported by Layer 2
D. They enable devices in different VSAN fabrics to communicate
E. They require that multiple switch fabrics be merged before they can function

多项选择题WhattwodescriptionsbestdefineDWDM？（）

A. a WDM system that is compatible with EDFA technology
B. an optical technology for transmitting up to 16 channels over multiple fiber strands
C. an optical technology for transmitting up to 32 channels over multiple fiber strands
D. a technology for transmitting multiple optical signals using less sophisticated transceiver designthen CWDM
E. a technology for transmitting more closely packed optical signals using more sophisticatedtransceiver designs than CWDM