CCNA2 6.0 Chapter 4 – Flashcards
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A network designer must provide a rationale to a customer for a design which will move an enterprise from a flat network topology to a hierarchical network topology. Which two features of the hierarchical design make it the better choice? (Choose two.)
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easier to provide redundant links to ensure higher availability simpler deployment for additional switch equipment
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What is a collapsed core in a network design
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a combination of the functionality of the distribution and core layers
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What is a definition of a two-tier LAN network design?
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distribution and core layers collapsed into one tier, and the access layer on a separate tier
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What is a basic function of the Cisco Borderless Architecture distribution layer?
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aggregating Layer 3 routing boundaries
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Which two previously independent technologies should a network administrator attempt to combine after choosing to upgrade to a converged network infrastructure? (Choose two)
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user data traffic VoIP phone traffic
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A local law firm is redesigning the company network so that all 20 employees can be connected to a LAN and to the Internet. The law firm would prefer a low cost and easy solution for the project. What type of switch should be selected?
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fixed configuration
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What are two advantages of modular switches over fixed-configuration switches? (Choose two.)
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increased scalability need for fewer power outlets
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Which type of address does a switch use to build the MAC address table?
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source MAC address
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Which network device can be used to eliminate collisions on an Ethernet network?
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switch
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What two criteria are used by a Cisco LAN switch to decide how to forward Ethernet frames? (Choose two.)
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ingress port destination MAC address
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Refer to the exhibit. Consider that the main power has just been restored. PC3 issues a broadcast IPv4 DHCP request. To which port will SW1 forward this request?
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Fa0/1, 2, 3 only
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What is one function of a Layer 2 switch?
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determines which interface is used to forward a frame based on the destination MAC address.
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Refer to the exhibit. How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty?
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SW1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch
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A small publishing company has a network design such that when a broadcast is sent on the LAN, 200 devices receive the transmitted broadcast. How can the network administrator reduce the number of devices that receive broadcast traffic?
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Segment the LAN into smaller LANs and route between them.
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Refer to the exhibit. How many broadcast domains are displayed?
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8
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Which solution would help a college alleviate network congestion due to collisions?
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a high port-density switch
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Which network device can serve as a boundary to divide a Layer 2 broadcast domain?
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router
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What is the destination address in the header of a broadcast frame?
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FF-FF-FF-FF-FF-FF
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What does the term "port density" represent for an Ethernet switch?
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the number of available ports
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Which statement describes a result after multiple Cisco LAN switches are interconnected?
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The broadcast domain expands to all switches.
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What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)
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to enhance user bandwidth to isolate traffic between segments
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Fill in the blank. A ____________ network is one that uses the same infrastructure to carry voice, data, and video signals.
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converged
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allows intelligent traffic load sharing by using all network resources
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flexibility
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facilitates understanding the role of each device at every tier, simplifies deployment, operation, management, and reduces fault domains at every tier
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hierarchical
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allows seamless network expansion and integrated service enablement on an on-demand basis
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modularity
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satisfies user expectations for keeping the network always on
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resiliency
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represents the network edge provides network access to the user
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access layer
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implements network access policy establishes Layer 3 routing boundaries
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distribution layer
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provides high-speed backbone connectivity functions as an aggregator for all the campus blocks
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core layer
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appropriate for high performance computing applications forward process can begin after receiving the destination address may forward invalid frames
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cut-through
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error checking before forwarding forwarding process only begins after receiving the entire frame only forwards valid frames
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store-and-forward
