單項選擇題You are the Cisco Network Designer in Cisco.com. Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual ringtopology？（）

A. Dynamic Trunking Protocol
B. Resilient Packet Ring
C. Synchronous Digital Hierarchy
D. Coarse Wave Division Multiplexing


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2.單項選擇題Cisco Express Forwarding （CEF） is mainly used to increase packet switching speed， reducing theoverhead and delays introduced by other routing techniques， increasing overall performance.Which of the following concerning CEF is recommended by Cisco？（）

A. Use default Layer 4 hash in core.
B. Use default Layer 3 hash in distribution.
C. Use default Layer 4 hash in distribution.
D. Use default Layer 3 hash in core and Layer 3 + Layer 4 hash in distribution layer.

3.多項選擇題Which three statements about firewall modes are correct？ （）

A. A firewall in routed mode has one IP address
B. A firewall in transparent mode has one IP address
C. In routed mode， the firewall is considered to be a Layer 2 dew
D. In routed mode， the firewall is considered to be a Layer 3 device
E. In transparent mode， the firewall is considered to be a Layer 2 device
F. In transparent mode， the firewall is considered to be a Layer 3 device

4.單項選擇題

Refer to the exhibit.

Which of the following is an advantage of device clustering utilizing Virtual Port Channels （vPC）？（）

A. A logical star topology provides a loop free environment so that all links will be used forwardtraffic
B. Enhanced EtherChannel hashing load balancing using the vPC peer link internal to the VPC
C. The control plane functions of the Nexus switches are merged to hide the use of virtualization
D. Neighboring devices connect on a Layer 3 MEC for improved packet forwarding

5.單項選擇題Which of these statements about FSPF is true？（）

A. It supports multipath routing
B. It can run any type of storage ports
C. When it is used， hop-by-hop routes are based only on the switch ID
D. When it is used， path status is based on the functionality of attached ports
E. It runs only on a switch fabric and cannot function in a VSAN

6.多項選擇題Which of the following two statements about Cisco NSF and SSO are the most relevant to thenetwork designer？ （）

A. You can reduce outage 1 to 3 seconds by using SSO in Layer 2 environment or Cisco NSF with SSO in a Layer 3 environment.
B. SSO and NSF each require the device to either be graceful restart-capable or graceful-aware.
C. In a fully redundant topology adding redundant supervisor a with NSF and SSO may causelonger convergence times than single supervisors with turned IGP times
D. The primary deployment scenario for Cisco NSF with SSO is in the Distribution and Corelayers.
E. Cisco NSF-aware neighbor relationship are independent of any turned IGP times

7.單項選擇題What is the recommended practice regarding UDLD when implementing it in all fiber-optic LANports？（）

A. Adjust the default hello timers to three seconds for aggressive mode
B. Enable it in global mode and on every interface you need to support
C. Enable it in global mode to support every individual fiber-optic interface
D. Enable it to create channels containing up to eight parallel links between switches

9.多項選擇題Which two statements correctly identify considerations to take into account when deciding onCampus QoS Design elements？ （）

A. Voice needs to be assigned to the hardware priority queue
B. Voice needs to be assigned to the software priority queue
C. Call signaling must have guaranteed bandwidth service
D. Strict-priority queuing should be limited to 50 percent of the capacity of the link
E. At least 33 percent or the link bandwidth should be reserved tor default best effort class

10.單項選擇題Which of the following is true regarding the effect of EIGRP queries on the network design？（）

A. EIGRP queries will be the most significant issue with respect to stability and convergence 
B. EIGRP queries are not a consideration as long as EIGRP has a feasible successor with a nexthop AD that is greater than the FD of the current successor route 
C. EIGRP queries will only increase the convergence time when there are no EIGRP stubsdesigned in the network