“Cisco Certified Network Associate Exam (CCNA)” 200-125 exam. Ready to pass the 200-125 exam please click https://www.pass4itsure.com/200-125.html (full exam dump)
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Cisco 200-125 Online Exam Practice Questions
QUESTION 1
Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built-in security
mechanisms?
A. HDLC
B. PPP
C. X.25
D. Frame Relay
Correct Answer: B
PPP: Provides router-to-router and host-to-network connections over synchronous and asynchronous circuits. PPP was
designed to work with several network layer protocols, including IP. PPP also has built-in security mechanisms, such as
Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP).
QUESTION 2
An administrator has connected devices to a switch and, for security reasons, wants the dynamically learned MAC
addresses from the address table added to the running configuration. Which action must be taken to accomplish this?
A. Use theno switchport port-securitycommand to allow MAC addresses to be added to the configuration.
B. Enable port security and use the keywordsticky.
C. Set the switchport mode to trunk and save the running configuration.
D. Use theswitchport protectedcommand to have the MAC addresses added to the configuration.
Correct Answer: B
QUESTION 3
How can you manually configure a switch so that it is selected as the root Switch?
A. increase the priority number
B. lower the port priority number
C. lower the priority number
D. increase the port priority number
Correct Answer: C
QUESTION 4
Which two benefits of implementing a full-mesh WAN topology are true?(Choose two)
A. increased latency
B. redundancy
C. improved scalability
D. reliability
E. reduced itter
Correct Answer: BD
QUESTION 5
Which three commands are required to enable NTP authentication on a Cisco router? (Choose three)
A. ntp peer
B. ntp max-associations
C. ntp authenticate
D. ntp trusted-key
E. ntp authentication-key
F. ntp refclock
Correct Answer: CDE
Explanation: http://blog.ine.com/2007/12/28/how-does-ntp-authentication-work/
QUESTION 6
Which command can you enter to verify that a router is synced with a configures time source?
A. show ntp authenticate
B. ntp associations
C. ntp server time
D. ntp authenticate
E. show ntp associations
Correct Answer: E
QUESTION 7
When a router is unable to find a known route in the routing table, how does it handle the packet?
A. It discards the packet
B. It sends the packet over the route with the best metric
C. It sends the packet to the next hop address
D. It sends the packet to the gateway of last resort
Correct Answer: A
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