30 Questions
What type of cable is often referred to as a patch cable?
Straight-through cable
In which situation would you use a crossover cable according to the text?
From a host to a host
What does MDIX stand for when referring to cable connections?
Media Dependent Interface Crossover
Which device provides the crossover function when connecting two switches together?
Switch
How many wires are typically twisted together in twisted-pair cabling?
8 wires
What is the main difference between a straight-through cable and a crossover cable?
Usage scenarios
What is the primary function of a switch in a network?
Forward packets between devices based on MAC addresses
Which switching technology provides fault tolerance and increased bandwidth by combining multiple physical links into one logical link?
EtherChannel
Which protocol is used to prevent loops in layer 2 networks by dynamically shutting down redundant links?
STP
In a switch, what table is used to make forwarding decisions by mapping MAC addresses to port numbers?
Switching table
What is a key feature of VLANs in networking?
They create multiple broadcast domains within a single switch
Which QoS mechanism prioritizes network traffic by assigning different levels of importance to different types of data?
Classification and Marking
What is the purpose of Power over Ethernet (PoE)?
To eliminate the need for separate power connections by sending both data and power across the same cable
What is a key difference between Layer-3 switches and routers?
Layer-3 switches are optimized for Ethernet, while routers support a large number of WAN technologies.
In which scenarios is Power over Ethernet (PoE) particularly useful?
In places where providing separate power might be expensive or difficult
Which standard formalized Power over Ethernet (PoE) and initially provided roughly 13W of power to a device?
802.3af
In what environments are Layer-3 switches often deployed?
As the backbone of LAN or campus networks
What is the enhanced Power over Ethernet (PoE) standard that supports 25W or more power to a device?
802.3at
What is a characteristic of routers that distinguishes them from Layer-3 switches?
Support for more WAN technologies
Why are Layer-3 switches considered to be considerably cheaper per port than routers?
Higher port densities on Layer-3 switches
Why does Gigabit Ethernet require the phantom power method in Power over Ethernet (PoE)?
Because it uses all eight wires in a twisted-pair cable
What is the device that provides power in a Power over Ethernet (PoE) setup called?
Power Source Equipment (PSE)
Which statement is true about the functionality provided by Layer-3 switches?
Layer-3 switches generally provide Layer-2 functionality for intra-VLAN traffic.
Where are routers predominantly used in a network setup?
On network perimeters, connecting to WAN environments
What does the 't' in IOS version numbers stand for?
Train identifier
If an IOS version is 15.1(4)t, what does the '4' represent?
Individual release number
Which component of the command 'Router# show startup-config' indicates the specific command being executed?
startup-config
What does the 'y' represent in an IOS version number like 10.3(2)t?
Minor revision number
How are IOS version numbers usually formatted?
x.y(z)t
What is the term used to refer to the combination of major and minor revision numbers in an IOS version?
Maintenance Release number
Learn about Power over Ethernet (PoE), a technology that allows data and power to be transmitted over the same cable. Understand its applications in VoIP phones, security cameras, wireless access points, and thin clients. Explore the benefits of implementing PoE in various networking environments.
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