CCNA 2 Chapter 1 v5.0

What is the maximum wire speed of a single port on a 48-port gigabit switch?

1000 Mb/s

Refer to the exhibit. Fill in the blank. There are ___ collision domains in the topology.

12

Refer to the exhibit. Fill in the blank. There are ___ broadcast domains in the topology.

5

An administrator purchases new Cisco switches that have a feature called StackPower. What is the purpose of this feature?

It enables the sharing of power among multiple stackable switches.

When the installation of a network infrastructure is being planned, which technology will allow power to be provided via Ethernet cabling to a downstream switch and its connected devices?

PoE pass-through

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.

What is a collapsed core in a network design?

a combination of the functionality of the distribution and core layers

What is a basic function of the Cisco Borderless Architecture distribution layer?

aggregating Layer 3 routing boundaries

Which type of transmission does a switch use when the destination MAC address is not contained in the MAC address table?

broadcast

Fill in the blank. A _________ network is one that uses the same infrastructure to carry voice, data, and video signals.

converged

What is one function of a Layer 2 switch?

determines which interface is used to forward a frame based on the destination MAC address

What is one advantage of using the cut-through switching method instead of the store-and-forward switching method?

has lower latency appropriate for high-performance computing applications

What is a basic function of the Cisco Borderless Architecture access layer?

provides access to the user

What information is added to the switch table from incoming frame?

source MAC address and incoming port number

Which switch form factor should be used when large port density, fault tolerance, and low price are important factors?

stackable switch

ABC, Inc. has about fifty hosts in one LAN. The administrator would like to increase the throughput of that LAN. Which device will increase the number of collision domains and thereby increase the throughput of the LAN?

switch

What does the term "port density" represent for an Ethernet switch?

the number of available ports

Refer to the exhibit. Consider that the main power has just been restored. PC1 asks the DHCP server for IPv4 addressing. The DHCP server sends it an IPv4 address. While PC2 is still booting up, PC3 issues a broadcast IPv4 DHCP request. To which port will SW1 forward this request?

to Fa0/1, Fa0/2, and Fa0/3 only

What tool is important to consider for use when making hardware improvement decisions about switches?

traffic flow analysis

What are three characteristics for cut-through? (Non-reliable)

~appropriate for high performance computing applications ~forwarding process can begin after receiving the destination address ~may forward invalid frames

What are two function of a Multilayer switch?

~can build a routing table ~supports a few routing protocols

What are three characteristics for store-and-forward? (Reliable)

~error checking before forwarding ~forwarding process only begins after receiving the entire frame ~only forwards valid frames

What are two advantages of modular switches over fixed-configuration switches?

~need for fewer power outlets ~increased scalability

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?

~simpler deployment for additional switch equipment ~easier to provide redundant links to ensure availability

What are two reasons a network administrator would segment a network with a Layer 2 switch?

~to enhance user bandwidth ~to isolate traffic between segments

What are two functions of a Layer 2 switch?

~typically used in the access layer of a switched network ~forward traffic based on information in the Ethernet header