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New Questions 1
A network administrator wants to provide high availability in a data center environment by making sure that there is no reconvergence of Layer 2 and Layer 3 protocols when there is a Layer 3 switch failure. Which Cisco Nexus feature fulfills this purpose?
A. ISSU
B. VSS
C. vPC
D. MEC
Answer: C
New Questions 2
Which four primary attributes define a WAN service? (Choose four.)
A. bandwidth
B. bursting capacity
C. memory
D. CPU
E. QoS classes and policies
F. latency
G. multicast support
Answer: A,B,E,G
New Questions 3
With respect to address summarization, which of the following statements concerning IPv4 and IPv6 is true?
A. The potential size of the IPv6 address blocks suggests that address summarization favors IPv6 over IPv4.
B. Role based addressing using wildcard masks to match multiple subnets is suitable for IPv4, but unsuitable for IPv6.
C. In order to summarize, the number of subnets in the IPv4 address block should be a power of 2 while the number of subnets in the IPv6 address block should be a power of 64.
D. WAN link addressing best supports summarization with a /31 subnet for IPv4 and a /126 for IPv6.
Answer: B
Explanation:
http://www.ciscopress.com/articles/article.asp?p=1763921
"For IPv6 access lists, the wildcard masks are not usually used. All source and destination addresses are notated in the form of prefixes. Therefore, it is important that subnets that are to be grouped in an access list falling within a summarized address range."
New Questions 4
Which option describes the effect of using softphones instead of VoIP handsets on QoS implementation for the voice traffic?
A. It provides a Layer 2 CoS marking in the frames that can be used for QoS implementation.
B. Using softphones means that 802.1Q tagging must be configured between the PC and the switch.
C. The voice traffic of softphones is mixed with data traffic of PC on the access VLAN.
D. By using softphones, the implementation of a QoS depends only on trusting DSCP markings set by the PC.
Answer: C
New Questions 5
Which option is a common cause of congestion found in a campus network?
A. input serialization delay
B. output serialization delay
C. Rx-queue starvation
D. Tx-queue starvation
Answer: D
New Questions 6
Which multicast implementation strategy provides load sharing and redundancy by configuring intradomain RPs as MSDP peers?
A. anycast RP
B. auto-RP
C. bootstrap router
D. static RP
Answer: A
Explanation: https://www.cisco.com/c/en/us/td/docs/ios/solutions_docs/ip_multicast/White_papers/anyca st.html#wp1029118
"Anycast RP is a useful application of MSDP. Originally developed for interdomain multicast applications, MSDP used for Anycast RP is an intradomain feature that provides redundancy and load-sharing
capabilities. Enterprise customers typically use Anycast RP for configuring a Protocol Independent Multicast sparse mode (PIM-SM) network to meet fault tolerance requirements within a single multicast domain."
New Questions 7
At a certain customer's site, a NAS is both physically and logically in the traffic path. The NAS identifies clients solely based on their MAC addresses. In which access mode has this NAS been configured to operate?
A. Layer 2 mode
B. Layer 3 Edge mode
C. Layer 3 Central mode
D. Layer 3 In-Band mode
Answer: A
New Questions 8
Which four Cisco proprietary Spanning Tree Protocol enhancements are supported with rapid per-VLAN
Spanning-Tree plus? (Choose four.)
A. PortFast
B. UplinkFast
C. loop guard
D. root guard
E. BPDU guard
F. BackboneFast
Answer: A,C,D,E
New Questions 9
Which unique characteristics of the Data Center Aggregation layer must be considered by an Enterprise Campus designer?
A. Layer 3 routing between the Access and Aggregation layers facilitates the ability to span VLANs across multiple access switches, which is a requirement for many server virtualization and clustering 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 services, and other network services are commonly integrated by the use of service modules that are inserted in the aggregation switches.
D. Virtualization tools allow a cost effective approach for redundancy in the network design by using two or four VDCs from the same physical switch.
Answer: C
New Questions 10
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:
also known as" Packet Description Language Modules"
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
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