[2018-April-New]Best 300-320 PDF Free Download in Braindump2go[168-178]
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QUESTION 168
Which STP enhancement can be configured on Layer 2 ports between distribution layer switches?
A. LoopGuard
B. PortFast
C. UplinkFast
D. RootGuard
Answer: A
QUESTION 169
A campus network in a switch block design requires redundant distribution switches, load sharing across uplinks, a loop-free topology, and only one gateway IP address per VLAN. Which switching technology meets all of the requirements?
A. HSRP
B. VSS
C. Spanning Tree Protocol
D. EtherChannel
Answer: B
QUESTION 170
Which network virtualization technology provides logical isolation of network traffic at Layer 3?
A. VSS
B. VLAN
C. VRF-Lite
D. MEC
Answer: C
QUESTION 171
A network engineer is implementing virtualization into the enterprise network. Which system should be used to address policy enforcement at the distribution layer?
A. Cisco IOS based firewall
B. multilayer switches
C. integrated firewall services
D. identity services engine
E. intrusion protection systems
Answer: C
QUESTION 172
Which network virtualization plane is used to separate traffic forwarding tables?
A. control
B. data
C. management
D. access
Answer: B
QUESTION 173
Which type of application traffic typically requires prioritization across networks and may use a DSCP value of 34 (AF41)?
A. voice
B. interactive video
C. call signaling
D. routing
E. streaming video
F. network management
Answer: B
QUESTION 174
A company implemented VoIP in a campus network and now wants a consistent method to implement using AutoQoS. Which two parameters must be considered before AutoQoS is configured? (Choose two.)
A. CEF must be enabled.
B. AutoQoS is available only on routers.
C. Traffic discovery must be performed manually.
D. No service policy can be applied already.
E. Manual traffic analysis must be performed.
Answer: AD
QUESTION 175
Which two network management capabilities that are embedded in Cisco IOS Software will baseline existing application traffic? (Choose two.)
A. Syslog
B. AutoQoS
C. NetFlow
D. SNMP
E. NBAR
F. Logging
Answer: CE
QUESTION 176
AutoQoS is used to implement VoIP in the enterprise, but the trust option is not configured on the interface. Which network management Cisco IOS capability classifies the voice traffic?
A. NetFlow
B. SNMP
C. IP SLAs
D. NBAR
Answer: D
QUESTION 177
NBAR is deployed on the network as part of network optimization. Which technology is critical to recognize new applications on the network?
A. PDLM
B. ACLs
C. code upgrade
D. additional licenses
Answer: A
Explanation:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_nbar/configuration/15-mt/qos-nbar-15-mt-book/nbarapp-recog-mods.html
QUESTION 178
Which two benefits are achieved if a network is designed properly with a structured addressing scheme? (Choose two.)
A. efficient ACLs
B. improved redundancy
C. hardened security
D. easier troubleshooting
E. added resiliency
Answer: AD
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