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Q101. Which WAN technology is a cost-effective method to deliver 100Mb of bandwidth to multiple branch offices?
A. DSL
B. DWDM
C. ISDN
D. Metro Ethernet
Answer: D
Q102. What is the primary advantage of implementing a wireless LAN controller in a wireless LAN design?
A. roaming between APs
B. RADIUS user authentication
C. radio resource management
D. accelerated data transfer
Answer: C
Q103. An organization is deciding what routing protocol to use throughout their network. What must be considered if routing is to be performed at the access layer?
A. reduced scalability of the network when introducing a large number of switch blocks into the routing table
B. centralized management of access control lists at the distribution layer
C. reliability when implementing routing over spanning-tree at the access layer
D. performance differences between core, distribution and access layer equipment
Answer: D
Q104. Application servers require load balancing and security services. Where in the data center network should these services be provisioned?
A. core
B. aggregation
C. Layer 3 access
D. distribution
Answer: B
Q105. When designing a WAN backup for voice and video applications, what three types of connections should be used? (Choose three.)
A. Private WAN
B. internet
C. ISDN
D. MPLS
E. dial-up
F. ATM
G. DSL
Answer: A,C,D
Q106. A company has dark fiber between headquarters and its data center. It is presently configured as a 10GbE connection. Network utilization shows high utilization on the connection. What technology can be implemented to increase capacity without acquiring another circuit?
A. MPLS
B. DWDM
C. VPLS
D. DMVPN
Answer: B
Q107. In which network location should an external DNS server be placed?
A. campus data center
B. enterprise branch
C. internet
D. remote access
Answer: C
Q108. Which technology enables WLCs to peer with each other to enable roaming support?
A. WAP profiles
B. roaming profiles
C. mobility groups
D. peer.groups
Answer: C
Q109. Which model of ISR is utilized for the teleworker design profile? A. Cisco 1900 Series
B. Cisco 1800 Series
C. Cisco 800 Series
D. Cisco 500 Series
Answer: C
Q110. Which three options are valid Cisco STP tools used to ensure best-practice access layer design for the enterprise campus? (Choose three.)
A. Port fast
B. UDLD
C. Root Guard
D. BPDU Guard
E. Flex Links
F. SPAN
G. Ether Channel
Answer: A,C,D
Explanation:
Access layer Limit VLANs to a single closet when possible to provide the most deterministic and highly available topology.
Use RPVST+ if STP is required. It provides the best convergence.
Set trunks to ON and ON with no-negotiate
Manually prune unused VLANs to avoid broadcast propagation.
Use VTP Transparent mode, because there is little need for a common VLAN database in hierarchical networks.
Disable trunking on host ports, because it is not necessary. Doing so provides more security and speeds up Port Fast.
Consider implementing routing in the access layer to provide fast convergence and Layer 3 load balancing.
Use Cisco STP Toolkit, which provides Port Fast, Loop Guard, Root Guard, and BPDU Guard.
