Ch 1 quiz

1

What is Step 2 in how a LAN switch forwards a frame?

1

What are the classes of problems caused by NOT using STP in Redundant
LANs? (Choose all that apply.)

1

With STP timers, if the hellos do not show up again within MaxAge time, the
switch reacts by taking steps to change the _________________________.

1

During the root election the BID is broken down into its components. If there is
a tie with the lowest bridge ID what is next to be compared?

1

On a nonroot switch, STP places its port that has the least cost to the root,
called that switch’s _____________________________, in forwarding state.

1

What are the messages called that are used by switches to exchange information
with each other?

1

Timer values on the root switch includes the hello time, MaxAge time and
_______________ time.

1

When a port that formerly blocked needs to transition to forwarding, the switch
first puts the port through two intermediate interface states. (choose the
correct state for each explanation)

A. Like the blocking state, the interface does not forward frames. The switch
removes old stale (unused) MAC table entries for which no frames are
received from each MAC address during this period. These stale MAC tab le
entries could be the cause of the temporary loops.

B. Interfaces in this state still do not forward frames, but the switch begins to
learn the MAC address of frames received on the interface.

1

The best way to lower STP’s convergence time is to avoid convergence all
together. ___________________________ provides a way to prevent STP
convergence from being needed when only a single port or cable failure
occurs.

1

The IEEE cost of 100 is what Ethernet speed?

1

What is Step 3 in the steady-state operation when nothing is currently changing
in the STP topology?

Chapter 1 quiz

What is Step 2 in how a LAN switch forwards a frame?

What are the classes of problems caused by NOT using STP in Redundant LANs? (Choose all that apply.)

With STP timers, if the hellos do not show up again within MaxAge time, the switch reacts by taking steps to change the _________________________.

During the root election the BID is broken down into its components. If there is a tie with the lowest bridge ID what is next to be compared?

On a nonroot switch, STP places its port that has the least cost to the root, called that switch’s _____________________________, in forwarding state.

What are the messages called that are used by switches to exchange information with each other?

Timer values on the root switch includes the hello time, MaxAge time and _______________ time.

The best way to lower STP’s convergence time is to avoid convergence all together. ___________________________ provides a way to prevent STP convergence from being needed when only a single port or cable failure occurs.

The IEEE cost of 100 is what Ethernet speed?

What is Step 3 in the steady-state operation when nothing is currently changing in the STP topology?

What are the classes of problems caused by NOT using STP in Redundant
LANs? (Choose all that apply.)

With STP timers, if the hellos do not show up again within MaxAge time, the
switch reacts by taking steps to change the _________________________.

During the root election the BID is broken down into its components. If there is
a tie with the lowest bridge ID what is next to be compared?

On a nonroot switch, STP places its port that has the least cost to the root,
called that switch’s _____________________________, in forwarding state.

What are the messages called that are used by switches to exchange information
with each other?

Timer values on the root switch includes the hello time, MaxAge time and
_______________ time.

The best way to lower STP’s convergence time is to avoid convergence all
together. ___________________________ provides a way to prevent STP
convergence from being needed when only a single port or cable failure
occurs.

What is Step 3 in the steady-state operation when nothing is currently changing
in the STP topology?