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Q61. You need to connect to a remote branch office via an Internet connection. The remote office does not use Cisco equipment. This connection must be secure and must support OSPF. Which of the following can be used to transport data to the branch office? 

A. GRE over IPsec 

B. IPsec 

C. GRE 

D. IPsec VTI 

Answer:


Q62. A network engineer is designing an enterprise managed VPN solution for a large number of remote offices that do not have on-site IT support and communicate only with the home office. What type of VPN solution should be implemented? 

A. VPLS 

B. GRE 

C. IPsec 

D. EVPN 

E. DMVPN 

F. SSL client 

Answer:


Q63. Which IP telephony component supports VoIP, PoE, and QoS? 

A. client endpoints 

B. voice-enabled infrastructure 

C. Cisco Unified Communications Manager 

D. Cisco Unified Contact Center 

Answer:


Q64. Which three items pertain to EIGRP? (Choose three.) 

A. Can use multiple unequal paths. 

B. Routes are redistributed as type 2 by default. 

C. ASN and K values must match to form neighbors. 

D. Uses multicast address 224.0.0.9 for updates. 

E. Exchanges full routing table every 30 seconds. 

F. Summary routes have AD of 90. 

G. External routes have AD of 170. 

Answer: A,C,G 


Q65. What type of device can be installed to increase a broadcast domain? 

A. router 

B. switch 

C. IDS 

D. IPS 

Answer:


Q66. Which three sources does a network designer use to collect information for characterizing an existing network? (Choose three.) 

A. staff input 

B. visual inventory 

C. network audit 

D. traffic analysis 

E. server statistics 

Answer: A,C,D 


Q67. Which RFC defines the IPv6 standard? 

A. RFC 1918 

B. RFC 2338 

C. RFC 2460 

D. RFC 2740 

Answer:


Q68. 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:


Q69. Which statement describes the recommended deployment of DNS and DHCP servers in the Cisco Network Architecture for the Enterprise? 

A. Place the DHCP and DNS servers in the Enterprise Campus Access layer and Enterprise branch. 

B. Place the DHCP and DNS servers in the Enterprise Campus Server Farm layer and Enterprise branch. 

C. Place the DHCP server in the Enterprise Campus Core layer and Remote Access_VPN module with the DNS server in the Internet Connectivity module. 

D. Place the DHCP server in the Enterprise Campus Distribution layer with the DNS server in the Internet Connectivity module. 

Answer:

Explanation: For the Enterprise Campus, DHCP and internal DNS servers should be located in the Server Farm and they should be redundant. External DNS servers can be placed redundantly at the service provider facility and at the Enterprise branch. 


Q70. Which two of these practices are considered to be best practices when designing the access layer for the enterprise campus? (Choose two.) 

A. Implement all of the services (QoS, security, STP, and so on) in the access layer, offloading the work from the distribution and core layers. 

B. Always use a Spanning Tree Protocol; preferred is Rapid PVST+. 

C. Use automatic VLAN pruning to prune unused VLANs from trunked interfaces to avoid broadcast propagation. 

D. Avoid wasted processing by disabling STP where loops are not possible. 

E. Use VTP transparent mode to decrease the potential for operational error. 

Answer: B,E 

Explanation: 

When designing the building access layer, you must consider the number of users or ports required to size up the LAN switch. Connectivity speed for each host should also be considered. Hosts might be connected using various technologies such as Fast Ethernet, Gigabit Ethernet, or port channels. The planned VLANs enter into the design. 

Performance in the access layer is also important. Redundancy and QoS features should be considered. 

The following are recommended best practices for the building access layer: 

. Limit VLANs to a single closet when possible to provide the most deterministic and highly available topology. 

. Use Rapid Per-VLAN Spanning Tree Plus (RPVST+) if STP is required. It provides the faster convergence than traditional 802.1d default timers. 

. Set trunks to ON and ON with no-negotiate. 

. Manually prune unused VLANs to avoid broadcast propagation (commonly done on the distribution switch). 

. Use VLAN Trunking Protocol (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 PortFast. 

. Consider implementing routing in the access layer to provide fast convergence and Layer 3 load balancing. 

. Use the switchport host commands on server and end-user ports to enable PortFast and disable channeling on these ports. 

. Use Cisco STP Toolkit, which provides 

. PortFast: Bypass listening-learning phase for access ports 

. Loop GuarD. Prevents alternate or root port from becoming designated in absence of bridge protocol data units (BPDU) 

. Root GuarD. Prevents external switches from becoming root 

. BPDU GuarD. Disables PortFast-enabled port if a BPDU is received Cisco Press CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 3, Page 85