CCDP Flashcards
What are Cisco recommended best practices for the Distribution layer?
Answer:
Use first-hop redundancy protocols. HSRP or GLBP (Gateway Load Balancing Protocol) should be used if you implement Layer 2 links between the access and distribution. Use layer 3 links between distribution and the core switches to allow for fast convergence and load balancing.
Build layer 3 triangles not squares. Use the distribution switches to connect Layer 2 VLANs that span multiple access Layer switches. Summarize routes from distribution to the core of the network to reduce routing over-head. Use VSS (Virtual Switching System) as an option to eliminate the use of STP.
Where do we place a DHCP server?
Answer:
Enterprise Campus Data Center / Server Farm
Enterprise Branch of the Enterprise Campus Architecture
What does the 802.11; architecture contain?
Answer:
- 4way hand shake and Group Key Handshake. Both use 802.1x for authentication (entailing the use of Extensible Authentication Protocol [EAP]) and an authentication server.
Robust Security Network (RSN) for the establishment and tracking of robust security network associations.
Advanced Encryption Standards (AES) for confidentiality, integrity, and origin authentication.
Enterprise Campus Core consist of which sub-modules?
Answer:
A) Campus Core
B) Building Distribution
C) Building Access
D) Server Farm / Data Center
Which three factors best justify WAN link redundancy between geographically dispersed sites? (Choose three)
A) important traffic flows B) lack of speed C) high link utilization D) uncertain reliability E) excessive packet transmission rate F) high expense of transmitting data
Answer:
A) important traffic flows
B) lack of speed
D) uncertain reliability
Which of these accurately describes dial backup routing?
A) it always uses distance vector routing protocols
B) it always uses permanent static routes
C) the router inflates the dial backup link when a failure is detected on the primary link
D) it is supplied by the set vice provider as a secondary PVC at no additional charge
E) once the backup link is activated it will remain active even after the primary link is restored
Answer:
C) the router inflates the dial backup link when a failure is detected on the primary link
According to Cisco, which four improvements are the main benefit of the PPDIOO Lifecycles approach to network design?
A) faster RIO
B) improve business agility
C) increase network availability
D) faster access to application and services
E) lower total cost of network ownership
F) better implementation team aggregation
Answer:
B) improve business
C) increase network availability
D) faster access to application and services
E) lower total cost of network ownership
Western Associated News Agency recently acquired a large news organization with several sites, which will allow it to expand to worldwide markets. The new acquisition includes these connectivity technologies:
Frame Relay ATM
SONET cable
DSL wireless
From a Layer 1 viewpoint, which Enterprise Edge module will be most affected?
A) ISP B) PSTN C) E-Commerce D) WAN/MAN E) Edge Distribution F) Internet Connectivity
Answer:
D) WAN/MAN
What are Cisco’s recommended best practice for the Access Layer?
Answer:
Limit VLANs to a single closet. Use RPVST+ if STP is required. Set trunks to ON and ON with no-negotiate. Manually prune un-used 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 PortFast. Consider implementing routing in the access layer to provide fast convergence and Layer 3 load balancing. Use Cisco STP Toolkits which provides PortFast, Loop Guard, Root Guard and BPDU Guard.
Which three mechanisms are required to deploy QoS on an IP WAN? (Choose three)
A) traffic classification B) call Admission Control C) queuing and scheduling D) link efficiency techniques E.) traffic shaping F) bandwidth provisioning
Answer:
B) Call Admission Control
D) link efficiency techniques
E.) traffic shaping
Enterprise Edge Area consist of which sub-modules?
Answer:
A) E-commerce network services
B) Internet connectivity and demilitarized zone (DMZ)
C) VPN and remote access
D) Enterprise WAN
Which three types of WAN topologies can be deployed in the Cisco Enterprise Architecture Enterprise Edge WAN module? (Choose three)
A) ring B) star C) full mesh D) core/edge E) collapsed core F) partial mesh
Answer:
B) star
C) full mesh
F) partial mesh
Which two of these best describe the implementation of a WAN Backup design over the Internet? (Choose two)
A) a best-effort method
B) requires no ISP coordination or involvement
C) bandwidth guaranteed based on interface configuration
D) designed as an alternative to a failed WAN connection
E) implemented with a point-to-point logical link using a Layer 2 tunnel
Answer:
A) a best-effort method
D) designed as an alternative to a failed WAN connection
Which of these is the best routing deployment for a single dedicated link to an ISP for Internet access?
A) EIGRP B) RIP C) BGP D) Static E) OSPF
Answer:
D) Static
When designing using the Cisco Enterprise Architecture, in which Enterprise Campus layer do the Enterprise Edge and Enterprise WAN modules establish their connection?
A) Campus Core B) Building Access C) Enterprise Branch D) Building Distribution E) Enterprise Data Center
Answer:
A) Campus Core
