Updated 200-125 CCNA v3.0 Routing and Switching exam dumps online

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Share some CCNA Routing and Switching 200-125 exam questions and answers below.
A receiving host computes the checksum on a frame and determines that the frame is damaged. The frame is then discarded. At which OSI layer did this happen? 
A. session 
B. transport 
C. network 
D. data link 
E. physical 
Answer: D

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 
Answer: E

Which of the following describes the roles of devices in a WAN? (Choose three.) 
A. A CSU/DSU terminates a digital local loop. 
B. A modem terminates a digital local loop. 
C. A CSU/DSU terminates an analog local loop. 
D. A modem terminates an analog local loop. 
E. A router is commonly considered a DTE device. 
F. A router is commonly considered a DCE device. 
Answer: A,D,E

A network administrator is verifying the configuration of a newly installed host by establishing an FTP connection to a remote server. What is the highest layer of the protocol stack that the network administrator is using for this operation? 
A. application 
B. presentation 
C. session 
D. transport 
E. internet 
F. data link 
Answer: A

A router has two Fast Ethernet interfaces and needs to connect to four VLANs in the local network. How can you accomplish this task, using the fewest physical interfaces and without decreasing network performance? 
A. Use a hub to connect the four VLANS with a Fast Ethernet interface on the router. 
B. Add a second router to handle the VLAN traffic. 
C. Add two more Fast Ethernet interfaces. 
D. Implement a router-on-a-stick configuration. 
Answer: D


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