31 terms

CCNA2 6.0 Chapter 4

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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.)
easier to provide redundant links to ensure higher availability

simpler deployment for additional switch equipment
What is a collapsed core in a network design
a combination of the functionality of the distribution and core layers
What is a definition of a two-tier LAN network design?
distribution and core layers collapsed into one tier, and the access layer on a separate tier
What is a basic function of the Cisco Borderless Architecture distribution layer?
aggregating Layer 3 routing boundaries
Which two previously independent technologies should a network administrator attempt to combine after choosing to upgrade to a converged network infrastructure? (Choose two)
user data traffic
VoIP phone traffic
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?
fixed configuration
What are two advantages of modular switches over fixed-configuration switches? (Choose two.)
increased scalability
need for fewer power outlets
Which type of address does a switch use to build the MAC address table?
source MAC address
Which network device can be used to eliminate collisions on an Ethernet network?
switch
What two criteria are used by a Cisco LAN switch to decide how to forward Ethernet frames? (Choose two.)
ingress port
destination MAC address
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?
Fa0/1, 2, 3 only
What is one function of a Layer 2 switch?
determines which interface is used to forward a frame based on the destination MAC address.
Refer to the exhibit. How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty?
SW1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch
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?
Segment the LAN into smaller LANs and route between them.
Refer to the exhibit. How many broadcast domains are displayed?
8
Which solution would help a college alleviate network congestion due to collisions?
a high port-density switch
Which network device can serve as a boundary to divide a Layer 2 broadcast domain?
router
What is the destination address in the header of a broadcast frame?
FF-FF-FF-FF-FF-FF
What does the term "port density" represent for an Ethernet switch?
the number of available ports
Which statement describes a result after multiple Cisco LAN switches are interconnected?
The broadcast domain expands to all switches.
What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)
to enhance user bandwidth

to isolate traffic between segments
Fill in the blank. A ____________ network is one that uses the same infrastructure to carry voice, data, and video signals.
converged
allows intelligent traffic load sharing by using all network resources
flexibility
facilitates understanding the role of each device at every tier, simplifies deployment, operation, management, and reduces fault domains at every tier
hierarchical
allows seamless network expansion and integrated service enablement on an on-demand basis
modularity
satisfies user expectations for keeping the network always on
resiliency
represents the network edge

provides network access to the user
access layer
implements network access policy

establishes Layer 3 routing boundaries
distribution layer
provides high-speed backbone connectivity
functions as an aggregator for all the campus blocks
core layer
appropriate for high performance computing applications

forward process can begin after receiving the destination address

may forward invalid frames
cut-through
error checking before forwarding

forwarding process only begins after receiving the entire frame

only forwards valid frames
store-and-forward
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