Net+ 3.3 Lesson

From the host end, this can also be called NIC teaming; at the switch end, it can be called port aggregation and is referred to by Cisco as an EtherChannel. The term "bonding" is also widely substituted for "aggregation." 

More on Link Aggregation

Multiple Choice

Combining 2+ separate cabled links into a single logical channel is called

• Link Aggregation
• Link Bonding
• Data Aggregation
• Channel Merging

Multiple Select

Select the positives of using link aggregation

• provides redundancy

• cost effective

• good for medium businesses

• school friendly

Multiple Choice

Cisco calls link aggregation what?

• Link Bonding
• Port Aggregation
• EtherChannel
• Network Trunking

Multiple Choice

Another word for "aggregation" in networking is

• bundling
• bonding

• integration
• collection

Multiple Choice

If you are using ports 1, 3, 5, 7, 9, and 11 and each port can handle 1Gbps, then how fast would that bond be if they were linked through link aggregation?

• 6Gbps
• 8Gbps
• 4Gbps
• 10Gbps

Analogy

 Imagine sending packages (data) across a network. The MTU is like the maximum size of a box a delivery truck (switch port) can handle. If a package is too big (data exceeds MTU), it won't fit and needs to be broken down (fragmented) into smaller pieces for delivery, causing delays.

Multiple Choice

The max MTU that can be sent is

• 1400 bytes
• 1600 bytes
• 1200 bytes
• 1500 bytes

Multiple Choice

If the payload is larger than the standard MTU of 1500 bytes, what will happen?

• The payload will be sent without any changes.
• The connection will be terminated immediately.
• The payload will be fragmented into smaller packets.
• The payload will be compressed before transmission.

Multiple Choice

Enabling jumbo frames increases the MTU to what size?

• 6000 bytes
• 9000 bytes
• 3000 bytes
• 1500 bytes

Multiple Choice

Enabling Jumbo frames reduces

• Network latency
• Data packet size
• Transmission speed
• Network overhead

Image Breakdown

Minimum configuration needed to prevent loops in a network with 3 bridges or switches

• The root bridge has two designated ports (DP) connected to Bridge A and Bridge B. 

• Bridges A and B both have root ports (RP) connected back to the interfaces on the root bridge. 

• Bridges A and B also have a connection directly to one another. 

• On Bridge A, this interface is active and traffic for Bridge B can be forwarded directly over it. 

• On Bridge B, the interface is blocked (BP) to prevent a loop, and traffic for Bridge A must be forwarded via the root bridge.

-Frames NEVER expire (time to live)
-layer 2 broadcasts and flooded traffic could continue to loop FOREVER!
-major network disruption

Network Loops

-Acts as a network traffic cop
-detects bridge loops and -intelligently disables bridge ports
-ensure data takes a single, defined path, preventing the chaos

STP

Improved Performance: With STP, data packets reach their destination faster and more reliably, leading to a smoother network experience for everyone.

Reduced Congestion: By eliminating loops that cause endless retransmission of data, STP helps free up network resources and prevents unnecessary traffic jams.

Increased Stability: STP helps maintain a stable network environment by preventing the unpredictable behavior caused by bridge loops.

Benefits of STP

Multiple Choice

Network loops are caused by

• Single path in a network that creates a direct connection.
• Insufficient bandwidth for data transmission.
• High latency in network communication.
• Multiple paths in a network that create circular data routes.

Multiple Choice

What protocol protects networks from looping?

• Spanning Tree Protocol (STP)
• Internet Control Message Protocol (ICMP)
• Link Aggregation Control Protocol (LACP)
• Dynamic Host Configuration Protocol (DHCP)

Multiple Choice

STP can be compared to what?

• network traffic cop

• network traffic dam

• network traffic curb

• network traffic funnel

Multiple Select

What 3 things does STP do to a network?

• Improved performance

• Reduced Congestion

• Increased Stability

• Enhanced Security

Convenience and Cost Savings: PoE simplifies network setup by reducing cable clutter and eliminating the need for additional power outlets. This can save time and money during installation.

PoE Benefits

Flexibility: PoE allows for device placement in areas where power outlets might be limited, such as ceilings for access points or high walls for security cameras.

PoE Benefits

Centralized Power Management: With PoE, power delivery can be managed and controlled centrally through the network switch, offering better control and easier troubleshooting.

PoE Benefits

PoE Devices

Multiple Choice

PoE stands for?

• Power over Electrical
• Power over Ethernet
• Power on Ethernet
• Power over Energy

Multiple Choice

PoE simplifies network setup by...

• increasing the complexity of network wiring.
• requiring additional software for device management.
• limiting the number of devices that can be connected.
• eliminating the need for separate power supplies for network devices.

Multiple Choice

PoE can save you money because

• PoE increases installation costs significantly.
• PoE is only beneficial for large enterprises.
• PoE requires more energy than traditional methods.
• reducing installation costs and energy consumption.

Multiple Choice

PoE increases flexibility of installs because

• PoE requires multiple cables for installation.
• PoE only works with wireless devices.
• PoE allows devices to be powered and connected via a single cable.

• PoE decreases the number of devices that can be connected.

Multiple Choice

PoE can be managed through

• PoE routers
• PoE switches, injectors, or management software
• PoE firewalls
• PoE access points

Word Cloud

Insert a word you learned

Poll

How do you feel about this lesson?

• 1000 AURA

• SKIBIDI

• MID

• Please stop...