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Q1. According to Cisco, which four improvements are the main benefits of the PPDIOO lifecycle approach to network design? (Choose four.)
A. faster ROI
B. improved business agility
C. increased network availability
D. faster access to applications and services
E. lower total cost of network ownership
F. better implementation team engagement
Answer: B,C,D,E
Explanation:
The PPDIOO life cycle provides four main benefits:
+ It improves business agility by establishing business requirements and technology strategies.
+ It increases network availability by producing a sound network design and validating the network operation.
+ It speeds access to applications and services by improving availability, reliability, security, scalability, and performance.
+ It lowers the total cost of ownership by validating technology requirements and planning for infrastructure changes and resource requirements.
(Reference: Cisco CCDA Official Exam Certification Guide, 3rd Edition) described in the link below. Link: http://www.ciscopress.com/articles/article.asp?p=1608131&seqNum=3
Q2. 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
Q3. By default, how does EIGRP's metric differ from OSPF?
A. hops
B. cost
C. bandwidth
D. delay
Answer: D
Q4. Which two are types of network virtualization? (Choose two.)
A. VSS: Virtual Switching System
B. VRF: virtual routing and forwarding
C. VCI: virtual channel identifier
D. VLSM: variable length subnet masking
E. VM: virtual machine
F. VMP: Virtual Memory Pool
Answer: A,B
Explanation:
Network virtualization encompasses logical isolated network segments that share the same
physical infrastructure. Each segment operates independently and is logically separate
from the other segments. Each network segment appears with its own privacy, security,
independent set of policies, QoS levels, and independent routing paths.
Here are some examples of network virtualization technologies:
VLAN: Virtual local-area network
VSAN: Virtual storage-area network
VRF: Virtual routing and forwarding
VPN: Virtual private network
VPC: Virtual Port Channel
Q5. What part of the network does a top-down network design focus on for solution development?
A. presentation
B. hardware
C. session
D. application
E. data link
F. transport
Answer: D
Q6. 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: A
Q7. A spanning tree topology can be simplified by deploying what Cisco IOS technology in the distribution block?
A. VDC
B. vPC
C. Rapid PVST+
D. VSS
E. Flex Links
Answer: D
Q8. 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
Q9. Which Cisco Wireless LAN Controller interface is used for out-of-band management?
A. service port
B. management port
C. controller port
D. virtual port
Answer: A
Q10. Which one of these statements is an example of how trust and identity management solutions should be deployed in the enterprise campus network?
A. Authentication validation should be deployed as close to the data center as possible.
B. Use the principle of top-down privilege, which means that each subject should have the privileges that are necessary to perform their defined tasks, as well as all the tasks for those roles below them.
C. Mixed ACL rules, using combinations of specific sources and destinations, should be applied as close to the source as possible.
D. For ease of management, practice defense in isolation - security mechanisms should be in place one time, in one place.
Answer: C
Explanation: Validating user authentication should be implemented as close to the source as possible, with an emphasis on strong authentication for access from untrusted networks. Access rules should enforce policy deployed throughout the network with the following guidelines:
.Source-specific rules with any type destinations should be applied as close to the source as possible.
.Destination-specific rules with any type sources should be applied as close to the destination as possible.
.Mixed rules integrating both source and destination should be used as close to the source as possible.
An integral part of identity and access control deployments is to allow only the necessary access. Highly distributed rules allow for greater granularity and scalability but, unfortunately, increase the management complexity. On the other hand, centralized rule deployment eases management but lacks flexibility and scalability.
Practicing “defense in depth” by using security mechanisms that back each other up is an important concept to understand. For example, the perimeter Internet routers should use ACLs to filter packets in addition to the firewall inspecting packets at a deeper level.
Cisco Press CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 13