With the pro mother nature connected with each Cisco software program and those that maintain any Cisco documentation, it will help make standing and also receptive communication while using the close buyers that you choose to provider. You may also a little more on the useful possession, each on your boss as well as the consumer. Aside in the buyers, nevertheless, the provider you are working to get and also desire to benefit at some point, could comprehend people as the as a possible all the more useful enterprise possession than ever.
Q101. An organization needs a WAN Transport technology that meets these criteria:
. has a low initial cost
. provides low-to-medium BW
. has medium-to-high latency and jitter
Which technology should the organization use?
A. DSL
B. X.25
C. ISDN
D. wireless
E. analog modem
Answer: A
Q102. 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
Q103. Refer to the exhibit. On which router should you configure redistribution?
A. Router 1
B. Router 2
C. Router 3
D. Router 4
E. Router 5
Answer: B
Q104. Which three are security services offered through Cisco Router Security? (Choose three.)
A. Trust and Identity
B. Integrated Threat Control
C. Unified Wireless Network Security Solution
D. Secure Connectivity
E. Voice-Messaging Security
F. Endpoint Security
G. Virtual Security Gateway
Answer: A,B,D
Q105. What submodule is found within the Enterprise Edge module?
A. enterprise WAN
B. remote branch
C. campus IPS
D. building distribution
Answer: A
Q106. A data center is reaching its power and cooling capacity. What two virtualization
technologies can address the problem by directly reducing the number of physical devices? (Choose two.)
A. virtual switching systems
B. virtual device contexts
C. virtual servers
D. virtual routing and forwarding
E. virtual port channels
F. virtual LANs
Answer: B,C
Q107. In the enterprise data center, which are the three main components? (Choose three.)
A. Network Infrastructure
B. Interactive services
C. Data Center Management
D. Internet services
E. WAN services
F. VPN and remote access
Answer: A,B,C
Q108. What is the first step when creating a network security policy?
A. define what should be protected
B. investigate how likely an attack is to occur
C. implement measures to protect assets
D. hire a security firm to perform penetration tests
Answer: A
Q109. Which protocol is used to reserve bandwidth for the transport of a particular application data flow across the network?
A. cRTP
B. IEEE 802.1P
C. RSVP
D. LFI
E. Auto QOS
Answer: C
Explanation:
RSVP Signaling protocol that enables end stations or applications to obtain guaranteed bandwidth and low delays for their data flows.
Q110. Which protocol is the recommended first-hop redundancy protocol for an existing infrastructure that contains multiple vendors and platforms?
A. HSRP
B. VRRP
C. IGRP
D. OSPF
Answer: B
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