CCNA_(200-120)题库V2.1选择题.pdf

Exam A QUESTION 1 Refer to the exhibit. What will Router1 do when it receives the data frame shown? (Choose three.) A. Router1 will strip off the source MAC address and replace it with the MAC address 0000.0c36.6965. B. Router1 will strip off the source IP address and replace it with the IP address . C. Router1 will strip off the destination MAC address and replace it with the MAC address 0000.0c07.4320. D. Router1 will strip off the destination IP address and replace it with the IP address of . E. Router1 will forward the data packet out interface FastEthernet0/1. F. Router1 will forward the data packet out interface FastEthernet0/2. Correct Answer: ACF Section: part 1 Explanation Explanation/Reference: 看考：数数数数数数数为IP/mac地地题地地。 Age(min)下下- 题考地为为 A ：数MA 替替题f0/2 为题mac，官正 B：替替数IP，错错 ：替替为题mac题下全为为为题MA ，官正 D：替替为题IP，错错 E：从f0/1转发数数，错错 F：官正 QUESTION 2 Refer to the exhibit. Which three statements correctly describe Network Device A? (Choose three.) A. With a network wide mask of 28, each interface does not require an IP address. B. With a network wide mask of 28, each interface does require an IP address on a unique IP subnet. C. With a network wide mask of , must be a Layer 2 device for the PCs to communicate with each other. D. With a network wide mask of , must be a Layer 3 device for the PCs to communicate with each other. E. With a network wide mask of , each interface does not require an IP address. Correct Answer: BDE Section: part 1 Explanation Explanation/Reference: 如如，哪哪哪哪哪官正题哪哪哪哪哪送送A ？ 看考考考：这题看题这这哪这这题这题。使使这这28和请，两两两两题IP地地 属属两哪哪属，所所A要使要要要（哪三送送）才才数数，所所A送送设哪设为设要送设IP地地。使使这这 这，两两两两属属两全哪哪属，所所A要使使switch或hub就才数数，且且设要ip地地 QUESTION 3 Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication? A. transport B. network C. presentation D. session E. application