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
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Refer to the exhibit.
The Cisco Nexus 100v in the VMware vSphere solution effectively creates an additional accesslayer in the virtualized data center network， which of the following 1000v characteristics can thedesigner take advantage of？（）
A. Offloads the STP requirement from the external Access layer switches
B. If upstream access switches do not support vPC or VSS the dual-homed ESX host traffic canstill be distributed using virtual port channel host mode using subgroups automatically discoveredthrough CDP
C. Allow transit traffic to be forwarded through the ESX host between VMNICs
D. Can be divided into multiple virtual device contexts for service integration， enhanced security，administrative boundaries， and flexibility of deployment
A. routed mode
B. context mode
C. bridged mode
D. transparent mode
E. full security mode
A. to provide service internetworking
B. to support transparency for Layer 2 frames
C. as a connection identifier to indicate destination
D. as a mapping to the DLCI in service internetworking
E. to provide a trunk by which all VLANs can navigate from one site to one or multiple sites
A. Layer 3 routing between the Access and Aggregation layers facilities the ability to span VLANsacross multiple access switches， which is a requirement for many server virtualization andclustering technologies.
B. “East-west” server-to-server traffic can travel between aggregation modules by way of the core，but backup and replication traffic typically remains within an aggregation module.
C. Load balancing， firewall service， and other network service are commonly integrated by the useof service modules that are inserted in the aggregation switched.
D. Virtualization tools allow a cost effective approach for redundancy in the network design byusing two or four VDCs from the same physical switch.
A. QoS ToS/DSCP values are required to be forwarded transparently
B. Device redundancy is required
C. Per-user ACL support is required
D. Multicast service support is required
A. The design supports multiple server subnets Cisco 642-874： Practice Exam
B. An end-user sees the IP address of the real server
C. SLB routes between the outside and inside subnets
D. The source or destination MAC address is rewritten， but the IP addresses left alone
E. SLB acts as a "bump in the wire" between servers and upstream firewall or Layer 3 devices
A. The bus is limited to 32 devices
B. It is a full duplex serial standard
C. It is a half-duplex serial standard
D. It allows up to 320 MB/s of shared channel bandwidth
A. IP address space is difficult to manage.
B. Broadcast and fault domains arc increased
C. Convergence time is fractionally slower than STP
D. Limits on clustering and NIC teaming are removed
E. Fast uplink convergence is supported tor failover and fallback
A. when the design implements Layer 2 between the access arid distribution blocks
B. when multiple vendor devices need to be supported
C. when preempt tuning of the default gateway is needed
D. when a robust method of backing up the default gateway is needed
E. when the design implements Layer 2 between the access switch and the distribution blocks
F. when the design implements Layer 2 between the access and distribution blocks
A. OSPF stub areas can be thought of as a simple form of summarization
B. OSPF cannot filter intra area routes
C. An ARR ran only exist in two areas - the backbone and one adjacent area
D. Performance issues in the Backbone area can be offset by allowing some traffic to transit anon-backbone area
E. the size of an area （the LSDB） will be constrained by the size of the IP MTU
最新試題
Which three mechanisms are used to secure management traffic from outside IPS sensors？（）
In a VoWLAN deployment， what is the recommended separation between cells with the same channel？（）
What are two characteristics of the SLB One-arm mode？ （）
Which two design recommendations are most appropriate when OSPF is the data center core routing protocol？ （）
In which two locations in an enterprise network can an IPS sensor be placed？ （）
Which two of these correctly describe asymmetric routing and firewalls？ （）
Which three of the following descriptions are true about the firewall modes？ （）
Which statement about data center access layer design modes is correct？（）
Which path selection protocol is used by Fibre Channel fabrics？（）
Which statement correctly describes a situation in which VRFs are used in the data center？（）