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You are here: Home / CCNA / CCNA 200-125 Exam: WAN Questions and Answers

CCNA 200-125 Exam: WAN Questions and Answers

March 25, 2020 by david

CCNA 200-125 Exam: WAN Questions and Answers

Question 1. Which command can you enter to determine whether serial interface 0/2/0 has been configured using HDLC encapsulation?
A. router#show platform
B. router#show ip interface s0/2/0
C. router#show interfaces Serial 0/2/0
D. router#show ip interface brief

Answer: C

Question 2. Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built-in security mechanisms?
A. X.25
B. HDLC
C. PPP
D. Frame Relay

Answer: C

Question 3. Which statements about using leased lines for your WAN infrastructure are true?
A. Leased lines provide inexpensive WAN access.
B. Leased lines with sufficient bandwidth can avoid latency between endpoints.
C. Leased lines require little installation and maintenance expertise.
D. Leased lines provide highly flexible bandwidth scaling.
E. Multiple leased lines can share a router interface.
F. Leased lines support up to T1 link speeds.

Answer: B C

Question 4. Two routers named Atlanta and Brevard are connected by their serial interfaces as illustrated, but there is no connectivity between them. The Atlanta router is known to have a correct configuration. Given the partial configurations, identify the problem on the Brevard router that is causing the lack of connectivity.
A. transmission unit size too large
B. no loopback set
C. an incorrect subnet mask
D. incompatible encapsulation at each end
E. an incorrect IP address
F. incompatible bandwidth between routers

Answer: E

Question 5. 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

Question 6. Which two pieces of information are provided by the “show controllers serial 0” command? (Choose two)
A. the type of cable that is connected to the interface.
B. The uptime of the interface
C. the status of the physical layer of the interface
D. the full configuration of the interface
E. the interface’s duplex settings

Answer: A C

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