儿科护理相关专业知识
单选题When is a first-hop redundancy protocol needed in the distribution layer？（）Awhen the design implements Layer 2 between the access arid distribution blocksBwhen multiple vendor devices need to be supportedCwhen preempt tuning of the default gateway is n
题目
when the design implements Layer 2 between the access arid distribution blocks
when multiple vendor devices need to be supported
when preempt tuning of the default gateway is needed
when a robust method of backing up the default gateway is needed
when the design implements Layer 2 between the access switch and the distribution blocks
when the design implements Layer 2 between the access and distribution blocks
相似问题和答案
第1题：
A. when HSRP is not supported by the design
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 switch
F. when the design implements Layer 3 between the access switch and the distribution switch
第2题：
A. use a Layer 2 link between distribution switches
B. use a Layer 3 link between distribution switches
C. use a redundant link to the core
D. use a Layer 3 link between distribution switches with route summarization
第3题：
A. when the remote VPN peer is behind a NAT device
B. when multiple networks need to be reached across the tunnel
C. when the remote VPN peer is a dialup or remote access client
D. when a dynamic routing protocol such as OSPF is required across the VPN
第4题：
What benefit results from implementation of Layer 3 switching versus Layer 2 switching in a fully meshed campus network？（）
- A、ease of IP address assignment versus use of external routers
- B、redundancy from trunking between distribution layer switches
- C、provides first-hop redundancy to clients
- D、allows inter-VLAN communication without requiring complexity of routing protocols
正确答案:C
第5题：
During testing of network redundancy in a fully meshed enterprise campus， a problem has been reported. Both distribution multilayer switches are fully configured for redundancy； clients operate normally when the primary multilayer distribution switch is operating. All clients drop connections outside of their respective access layer group when the primary distribution switch is shut down and the secondary distribution switch is still operational. Additional information indicates that the secondary distribution switch is able to ping major corporate and Internet locations. Which item would be the best point of troubleshooting for this connectivity issue？ （）
- A、client network configuration
- B、VLAN mapping
- C、inter-switch trunk configuration
- D、UDLD configuration
- E、first-hop redundancy protocol
正确答案:E
第6题：
A. OSPF is not supported by the design
B. HSRP is not supported by the design
C. preempt tuning of the default gateway is needed
D. the design implements Layer 3 between the access switch and the distribution switch
第7题：
A. to uniquely identify devices at Layer 2
B. to allow communication with devices on a different network
C. to differentiate a Layer 2 frame from a Layer 3 packet
D. to establish a priority system to determine which device gets to transmit first
E. to allow communication between different devices on the same network
F. to allow detection of a remote device when its physical address is unknown
第8题：
A. The access layer is the first oversubscription point in a data center design.
B. When using a Layer 2 loop-free design, VLANs are extended into the aggregation layer.
C. When using a Layer 2 looped design, VLANs are not extended into the aggregation layer.
D. When using a Layer 3 design,stateful services requiring Layer 2 connectivity are provisioned from the aggregation layer.
E. The data center access layer provides the physical-level connections to the server resources and only operates at Layer 3.
第9题：
When you design QoS on CE for an MPLS Layer 2 VPN， which three things should be considered？（）
- A、Layer 2 access link QoS design
- B、enterprise-to-service-provider mapping models
- C、Layer 3 link access QoS design
- D、service provider service level agreements
- E、Layer 2 link access load balancing
正确答案:A,B,D
第10题：
Which two series of Cisco Catalyst switches， when placed in the distribution layer， effectively pass high amounts of network traffic between the core and access layers while aggregating access？ （）
- A、 Cisco Catalyst 2800
- B、 Cisco Catalyst 3550
- C、 Cisco Catalyst 3750
- D、 Cisco Catalyst 4500
- E、 Cisco Catalyst 6500
正确答案:D,E