QUESTION 21
There are 3 steps to confirm whether a range of IP addresses can be summarized. Which of the
following is used in each of these 3 steps?
A. |
The first number in the contiguous block of addresses |
B. |
The last number in the contiguous block of addresses |
C. |
The size of the contiguous block of addresses |
D. |
The subnet mask of the original network address |
Correct Answer: C
QUESTION 22
A well-designed IP addressing scheme supporting role-based functions within the subnet will result in the most efficient use of which technology?
A. |
Layer 3 switching in the core |
B. |
Network Admission Control (NAC) |
C. |
IP telephony (voice and video) services |
D. |
ACLs |
Correct Answer: D
QUESTION 23
Which of the following is true regarding the effect of EIGRP queries on the network design?
A. |
EIGRP queries will be the most significant issue with respect to stability and convergence |
B. |
EIGRP queries are not a consideration as long as EIGRP has a feasible successor with a next hop AD that is greater than the FD of the current successor route |
C. |
EIGRP queries will only increase the convergence time when there are no EIGRP stubs designed in the network |
Correct Answer: A
QUESTION 24
Which of the following is a result when designing multiple EIGRP autonomous systems within the Enterprise Campus network?
A. |
Impr |
B. |
Decreases complexity since EIGRP redistribution is automatically handled in the background |
C. |
Reduces the volume of EIGRP queries by limiting them to one EIGRP AS |
D. |
Scaling is improved when a unique AS is run at the Access, Distribution, and Core layers of the network |
Correct Answer: A
QUESTION 25
When designing the routing for an Enterprise Campus network it is important to keep which of the following route filtering aspects in mind?
A. |
Filtering is only useful when combined with route summarization |
B. |
It is best to filter (allow) the default and summary prefixes only in the Enterprise Edge to remote sites or site-to-site IPsec VPN networks |
C. |
IGPs (for example EIGRP or OSPF) are superior to route filtering in avoiding inappropriate transit traffic through remote nodes or inaccurate or inappropriate routing updates |
D. |
The primary limitation of router filtering is that it can only be applied on outbound updates |
Correct Answer: B
QUESTION 26
Which statement is the most accurate regarding IPsec VPN design for an Enterprise Campus environment?
A. |
VPN device IP addressing must align with the existing Campus addressing scheme. |
B. |
The choice of a hub-and-spoke or meshed topology ultimately depends on the number of remotes. |
C. |
Sizing and selection of the IPsec VPN headend devices is most affected by the throughput bandwidth requirements for the remote offices and home worker |
D. |
Scaling considerations such as headend configuration, routing protocol choice, and topology have the broadest impact on the design. |
Correct Answer: D
QUESTION 27
Refer to the exhibit. The Cisco Nexus 1000V in the VMware vSphere solution effectively creates an additional access layer in the virtualized data center network; which of the following 1000V characteristics can the designer take advantage of?
A. |
Offloads the STP requirement from the external Access layer switches |
B. |
If upstream access switches do not support vPC or VSS the dual-homed ESX host traffic can still be distributed using virtual port channel host mode using subgroups automatically discovered through CDP |
C. |
Allows transit traffic to be forwarded through the ESX host between VMNICs |
D. |
Can be divided into multiple virtual device contexts for service integration, enhanced security, administrative boundaries, and flexibility of deployment |
Correct Answer: B
QUESTION 28
Which unique characteristics of the Data Center Aggregation layer must be considered by an Enterprise Campus designer?
< span lang="EN-US" style="font-family: ; mso-no-proof: yes">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. |
Correct Answer: C
QUESTION 29
Support of vPC on the Cisco Nexus 5000 access switch enables various new design options for the data center Access layer, including which of the following?
A. |
The vPC peer link is not required for Access layer control traffic, and can instead be used to span VLANs across the vPC access switches |
B. |
A single switch can associate per-interface with more than one vPC domain |
C. |
vPC can be used on both sides of the MEC, allowing a unique 16-link EtherChannel to be built between the access and aggregation switches |
D. |
Allows an EtherChannel between a server and a access switch while still maintaining the level of availability that is associated with dual-homing a server to two different access switches |
Correct Answer: C
QUESTION 30
Which technology is an example of the need for a designer to clearly define features and desired performance when designing advanced WAN services with a service provider?
A. |
FHRP to remote branches |
B. |
Layer 3 MPLS VPNs secure routing |
C. |
Control protocols (for example Spanning Tree Protocol) for a Layer 3 MPLS service |
D. |
Intrusion prevention, QoS, and stateful firewall support network wide |
Correct Answer: B
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