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19. What protocols from the DOD stack reside at the Host-to-Host layer? (Choose all that apply)
A. IP
B. Darpa C. TCP
D. UDP
E. 802.3 F. 802.2
Answer: C, D
TCP and UDP are the only protocols specified at the Host-to-host layer of the DOD stack
Chapter: 1
20. Which STP state prepares to forward data frames without populating the MAC address table?
A. Blocking B. Listening
C. Learning
D. Forwarding
Answer: B
The purpose of the blocking state is to prevent the use of looped paths. A port in listening state prepares to
forward data frames without populating the MAC address table. A port in learning state populates the MAC address table but doesn't forward data frames. The forwarding port sends and receives all data frames on
the bridged port. Lastly, A port in the disabled state is virtually nonoperational.
Chapter: 1
21. What protocol is used to resolve a hardware address given the IP address?
A. RARP B. IP
C. Darpa
D. ICMP E. ARP
F. TCP
G. UDP
Answer: E
Address Resolution Protocol is used to find a hardware address from an IP address
Chapter: 1