Ccna certification Practice Tests

A. 802.1X

B. 802.1w

C. 802.1D

D. 802.1s

 127.  You have a network consisting of four switches, all configured with the same bridge 

priority. Which switch will be elected the root bridge?

A. 0081.023a.b433

B. 0011.03ae.d8aa

C. 0041.0611.1112

D. 0021.02fa.bdfc

 128.  What is the default STP mode all Cisco switches run?

A. 802.1D

B. 802.1w

C. PVST+

D.  Rapid PVST+

 129.  Which option is a correct statement about alternate ports in RSTP?

A.  An alternate port receives BPDUs from another port on the same switch and therefore 

can replace the designated port if it fails.

B.  An alternate port receives BPDUs from another switch and therefore can replace the 

designated port if it fails.

C.  An alternate port is always placed in a forwarding state.

D.  An alternate port receives BPDUs from another switch and therefore can replace the 

root port if it fails.