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Wednesday, February 11, 2009

CCNA 3 Exploration - Chapter 1

E-Switching Chapter 1 - CCNA Exploration: LAN Switching and Wireless (Version 4.0)

Provided by : Malcolm

1 Link aggregation should be implemented at which layer of the hierarchical network?


Core only


Distribution and core


Access and distribution


Access, distribution, and core


2 Which two features are supported at all three levels of the Cisco three-layer hierarchical model? (Choose two.)


Power over Ethernet


Load balancing across redundant trunk links


Redundant components


Quality of Service


Link aggregation


3 Which hierarchical design model layer controls the flow of network traffic using policies and delineates broadcast domains by performing routing functions between virtual LANs (VLANs)?


Application


Access


Distribution


Network


Core


4 Which layer of the hierarchical design model provides a means of connecting devices to the network and controlling which devices are allowed to communicate on the network?


Application


Access


Distribution


Network


Core


5 A technician is attempting to explain Cisco StackWise technology to a client that is setting up three stackable switches.Which explanation accurately describes StackWise technology?


StackWise technology allows up to eight ports to be bound together to increase available bandwidth.


StackWise technology allows the switch to deliver power to end devices by using existing Ethernet cabling.


StackWise technology allows the switch capabilities and ports to be expanded by the addition of line cards.


StackWise technology allows up to nine switches to be interconnected via the use of a fully redundant backplane.


6 Configuring communication between devices on different VLANs requires the use of which layer of the OSI model?


Layer 1


Layer 3


Layer 4


Layer 5



7 Which three features are commonly supported at the distribution layer of the Cisco hierarchical network model? (Choose three.)


Security policies


Power over Ethernet


Switch port security


Quality of service


Layer 3 functionality


End user access to network


8




Refer to the exhibit. Beginning with HR servers and workstations, a network engineer is designing a new security structure for the network. Which set of policies adheres to the hierarchical network model design principles?


Implement Layer 3 switching on S1 to reduce the packet processing load on D1 and D2. Install all security processing on S1 to reduce network traffic load.


Configure port security options on S1. Use Layer 3 access control features on D1 and D2 to limit access to the HR servers to just the HR subnet.


Move all HR assets out of the data center and connect them to S1. Use Layer 3 security functions on S1 to deny all traffic into and out of S1.


Perform all port access and Layer 3 security functions on C1.


9 A network technician is asked to examine an existing switched network. Following this examination, the technician makes recommendations for adding new switches where needed and replacing existing equipment that hampers performance. The technician is given a budget and asked to proceed. Which two pieces of information would be helpful in determining necessary port density for new switches? (Choose two.)


Forwarding rate


Traffic flow analysis


Expected future growth


Number of required core connections


Number of hubs that are needed in the access layer to increase performance


10 Which layer of the hierarchical network design model is referred to as the high-speed backbone of the internetwork? Where high availability and redundancy are critical?


Access layer


Core layer


Data-link layer


Distribution layer


Network layer


Physical layer


11 What statement best describes a modular switch?


A slim-line chassis


Allows interconnection of switches on redundant backplane


Defined physical characteristics


Flexible characteristics



12 Which hierarchical design characteristic would be recommended at both the core and distribution layers to protect the network in the case of a route failure?


PoE


Redundancy


Aggregation


Access lists


13 Which two characteristics are associated with enterprise level switches? (Choose two.)


Low port density


High forwarding rate


High latency level


Support link aggregation


Predefined number of ports



14 Which feature supports higher throughput in switched networks by combining multiple switch ports?


Convergence


Redundant links


Link aggregation


Network diameter


15 At which hierarchical layer are switches normally not required to process all ports at wire speed?


Core layer


Distribution layer


Access layer


Entry layer


16 For organizations that are implementing a voice over IP solution, what functionality should be enabled at all three layers of the hierarchical network?


Power over Ethernet


Quality of service


Switch port security


Inter-VLAN routing


17 Which layer of the OSI model does an access layer LAN switch use to make a forwarding decision?


Layer 1


Layer 2


Layer 3


Layer 4


18 What is the likely impact of moving a conventional company architecture to a completely converged network?


Local analog phone service can be completely outsourced to cost-effective providers.


The Ethernet VLAN structure is less complex.


A shared infrastructure is created resulting in a single network to manage.


QoS issues are greatly reduced.


There is less bandwidth competition between voice and video streams.


19 A network administrator is selecting a switch that will operate at the network core. Which three features should the switch support for optimum network performance and reliability? (Choose three.)


Port security


Security policies


10 Gigabit Ethernet


Quality of service (QoS)


Hot-swappable hardware


Power over Ethernet (PoE)


20





Refer to the exhibit. What characteristic of hierarchical network designs is exhibited by having SW3 connected to both SW1 and Sw2?


Scalability


Security


Redundancy


Maintainability



The Result is satisfactory. If you find any wrong answer please don't hesitate to comment or email me. Thanks for visiting the blog.





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6 comments:

  1. Do you have the rest of the chapters for CCNA III?

    ReplyDelete
  2. do u ve the rest of the chapter of ccna 3

    ReplyDelete
  3. I do have, soon you will find on my blog.
    Thanks for your time and efforts..

    ReplyDelete
  4. hi is the rest of ccna 3 here yet? thank you

    ReplyDelete
  5. is the rest of ccna 3 here yet? thank you

    ReplyDelete