Chapter 2 - Pre-Assessment

Question 1

Which of the following IEEE 802.1D port states are stable states used when STP has completed convergence? (Two answers).
A. Blocking
B. Forwarding
C. Listening
D. Learning
E. Discarding

Answer 1

A. Blocking

B. Forwarding

Question 2

Which of the following are transitory IEEE 802.1D port states used only during the process of STP convergence? (Two answers).
A. Blocking
B. Forwarding
C. Listening
D. Learning
E. Discarding

Answer 2

C. Listening

D. Learning

Question 3

Which of the following bridge IDs wins election as root, assuming that the switches with these bridge IDs are in the same network?
A. 32769:0200.1111.1111
B. 32769:0200.2222.2222
C. 4097:0200.1111.1111
D. 4097:0200.2222.2222
E. 40961:0200.1111.1111

Answer 3

C. 4097:0200.1111.1111

Question 4

What determines how often a nonroot bridge or switch sends an 802.1D STP Hello BPDU message?

Answer 4

B. The Hello timer as configured on the root switch

Question 5

Which of the following RSTP port states have the same name and purpose as a port state in traditional 802.1D STP? (Choose two.)
A. Blocking
B. Forwarding
C. Listening
D. Learning
E. Discarding

Answer 5

B. Forwarding

D. Learning

Question 6

RSTP adds some concepts to STP that enable ports to be used for a role if another port on the same switch fails. What statement is used to describe a port role that is waiting to take over for another port role? (Choose two).
A. An alternate port waits to become a root port
B. A backup port waits to become a root port
C. An alternate port waits to become a designated port
D. A backup port waits to become a designated port

Answer 6

A. An alternate port waits to become a root port

D. A backup port waits to become a designated port

Question 7

What STP feature causes an interface to be placed in the forwarding state as soon as the interface is physically active?

Answer 7

D. PortFast