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Q131. At which layer of the network is route summarization recommended?
A. data link layer
B. core layer
C. distribution layer
D. access layer
Answer: C
Q132. When considering the three VoIP design models - single site, centralized multisite, and distributed multisite - which question below would help to eliminate one of the options?
A. Will the switches be required to provide inline power?
B. Will users need to make offsite calls, beyond the enterprise?
C. Will users require applications such as voice mail and interactive voice response?
D. Are there users whose only enterprise access is via a QoS-enabled WAN?
Answer: D
Q133. With deterministic Wireless LAN Controller redundancy design, the different options available to the designer have their own strengths. Which one of these statements is an example of such a strength?
A. Dynamic load balancing, or salt-and-pepper access point design, avoids the potential impact of oversubscription on aggregate network performance.
B. N+N redundancy configuration allows logically grouping access points on controllers to minimize intercontroller roaming events.
C. N+N+1 redundancy configuration has the least impact to system management because all of the controllers are colocated in an NOC or data center.
D. N+1 redundancy configuration uses Layer 3 intercontroller roaming, maintaining traffic on the same subnet for more efficiency.
Answer: B
Explanation: With such an arrangement there is no complex mesh of access points & controllers. Link: http://www.cisco.com/web/learning/le31/le46/cln/qlm/CCDA/design/understanding-wireless-network-controller-technology-3/player.html
N+N WLC Redundancy With N+N redundancy, shown in Figure 5-14. an equal number of controllers hack up each other. For example, a pair of WLCs on one floor serves as a backup to a second pair on another floor. The top WLC is primary for API and AP2 and secondary for AP3 and AP4. The bottom WLC is primary for AP3 and AP4 and secondary for API and AP2. There should be enough capacity on each controller to manage a failover situation.
N+N+1 WLC Redundancy
With N+N+1 redundancy, shown in Figure 5-15, an equal number of controllers back up each other (as with N+N), plus a backup WLC is configured as the tertiary WLC for the APs. N+N+1 redundancy functions the same as N+N redundancy plus a tertiary controller that backs up the secondary controllers. The tertiary WLC is placed in the data center or network operations center
Q134. A remote office has a T1 WAN link to headquarters and a T1 Internet connection. The client requests WAN redundancy to headquarters with similar bandwidth. What two connection types satisfy this requirement? (Choose two.)
A. Secondary T1 WAN circuit
B. ISDN BRI
C. IPSec Tunnel over the Internet
D. DWDM l
E. POTS Line T1 WAN
Answer: A,C
Q135. A network engineer has been asked to follow a top down design approach. What layer of the OSI model is used to start the design?
A. physical
B. network
C. transport
D. application
Answer: D
Q136. Refer to the exhibit.
A standard Layer 2 campus network design is pictured. Which numbered box represents the core layer?
A. #1
B. #2
C. #3
D. #4
E. #5
Answer: C
Q137. Which IGP provides the fastest convergence by default?
A. EIGRP
B. OSPF
C. IS-IS
D. RSTP
E. BGP
Answer: A
Q138. Which design is the recommended geometric design for routed topologies?
A. linear
B. triangular
C. rectangular
D. circular
Answer: B
Q139. What is the most compact representation of the following IPv6 address?
2001:db8:0000:0000:cafe:0000:0000:1234
A. 2001:db8::cafe::1234
B. 2001:db8::cafe:0000:0000:1234
C. 2001:db8:0:0:cafe::1234
D. 2001:db8::cafe:0:1234
Answer: C
Q140. Which WLC interface is dedicated for WLAN client data?
A. virtual interface B. dynamic interface
C. management interface
D. AP manager interface
E. service port interface
Answer: B
Explanation:
WLC Interface Types
A WLC has five interface types:
Management interface (static, configured at setup, mandatory) is used for in-band management, connectivity to AAA, and Layer 2 discovery and association.
Service-port interface (static, configured at setup, optional) is used for out-of-band management. It is an optional interface that is statically configured.
AP manager interface (static, configured at setup, mandatory except for 5508 WLC) is used for Layer 3 discovery and association. It has the source IP address of the AP that is statically configured.
Dynamic interface (dynamic) is analogous to VLANs and is designated for WLAN client data.
Virtual interface (static, configured at setup, mandatory) is used for leaver 3 security authentication, DHCP relay support, and mobility management.