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NEW QUESTION: 1
When is it appropriate to move the customer conversation to the sustainable impact?
A. when the customer has a large budget and few-to-no cost constrains
B. when the customer wants to save money and doesn't care about waste
C. when the customer is not using original HP cartridges in HP printers
D. when you have won the deal and are about to close the sale
Answer: C
NEW QUESTION: 2
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. Avoid wasted processing by disabling STP where loops are not possible.
D. Use VTP transparent mode to decrease the potential for operational error.
E. Use automatic VLAN pruning to prune unused VLANs from trunked interfaces to avoid broadcast propagation.
Answer: B,D
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
NEW QUESTION: 3
仮想マシン環境でブロードキャスト放射線が発生する2つの理由は何ですか？ （2つ選択してください。）
A. 仮想マシンは主にブロードキャストモードで通信します。
B. レイヤー2ドメインは、仮想マシン環境で大きくなる可能性があります。
C. vSwitchとネットワークスイッチ間の通信はマルチキャストベースです。
D. vSwitchとネットワークスイッチ間の通信はブロードキャストベースです。
E. ブロードキャストパケットを処理するには、vSwitchがサーバーのCPUに割り込む必要があります。
Answer: A,B
Explanation:
Explanation
Broadcast radiation is the accumulation of broadcast and multicast traffic on a computer network. Extreme amounts of broadcast traffic constitute a broadcast storm.
The amount of broadcast traffic you should see within a broadcast domain is directly proportional to the size of the broadcast domain. Therefore if the layer 2 domain in virtual machine environment is too large, broadcast radiation may occur -> VLANs should be used to reduce broadcast radiation.
Also if virtual machines communicate via broadcast too much, broadcast
radiation may occur.
Another reason for broadcast radiation is using a trunk (to extend VLANs) from the network switch to the physical server.
Note about the structure of virtualization in a hypervisor:
Hypervisors provide virtual switch (vSwitch) that Virtual Machines (VMs) use to communicate with other VMs on the same host. The vSwitch may also be connected to the host's physical NIC to allow VMs to get layer 2 access to the outside world.
Each VM is provided with a virtual NIC (vNIC) that is connected to the
virtual switch. Multiple vNICs can connect to a single vSwitch, allowing VMs on a physical host to communicate with one another at layer 2 without having to go out to a physical switch.
Although vSwitch does not run Spanning-tree protocol but vSwitch
implements other loop prevention mechanisms. For example, a
frame that enters from one VMNIC is not going to go out of the
physical host from a different VMNIC card.
NEW QUESTION: 4
A banking customer wants to have a centralized view of the business after multiple mergers and acquisitions. Various technologies are used by branch offices for business operations.
What is the strategy to build this environment?
A. Use InfoSphere QualityStage to cleanse data in the branch data marts.
B. Use InfoSphere DataStage to standardize data marts for consistent reports.
C. Use InfoSphere QualityStage to standardize data within the branch's standalone data marts.
D. Use InfoSphere DataStage to transform data into centralized data warehouse.
Answer: D
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