Download Cisco.Selftestengine.200-125.2017-10-12.1e.43q.vcex

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Exam CCNA Cisco Certified Network Associate CCNA (v3.0)
Number 200-125
File Name Cisco.Selftestengine.200-125.2017-10-12.1e.43q.vcex
Size 1.46 Mb
Posted October 12, 2017
Downloaded 32



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Demo Questions

Question 1
In which two formats can the IPv6 address fd15:0db8:0000:0000:0700:0003:400F:572B be written? (Choose two.)

  • A: fd15:0db8:0000:0000:700:3:400F:527B
  • B: fd15::db8::700:3:400F:527B
  • C: fd15:db8:0::700:3:4F:527B
  • D: fd15:0db8::7:3:4F:527B
  • E: fd15:db8::700:3:400F:572B



Question 2
When an interface is configured with PortFast BPDU guard, how does the interface respond when it receives a BPDU?

  • A: It continues operating normally.
  • B: It goes into a down/down state.
  • C: It becomes the root bridge for the configured VLAN.
  • D: It goes into an errdisable state.



Question 3
What are three characteristics of the TCP protocol? (Choose three.)

  • A: It uses a single SYN-ACK message to establish a connection.
  • B: The connection is established before data is transmitted.
  • C: It ensures that all data is transmitted and received by the remote device.
  • D: It supports significantly higher transmission speeds than UDP.
  • E: It requires applications to determine when data packets must be retransmitted.
  • F: It uses separate SYN and ACK messages to establish a connection.



Question 4
Scenario 
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links. 
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices. 
Use appropriate show commands to troubleshoot the issues and answer all four questions. 
Instructions 
 
   
 
    
An OSPF neighbor adjacency is not formed between R3 in the main office and R4 in the Branch1 office. What is causing the problem?

  • A: There is an area ID mismatch.
  • B: There is a Layer 2 issue; an encapsulation mismatch on serial links.
  • C: There is an OSPF hello and dead interval mismatch.
  • D: The R3 router ID is configured on R4.



Question 5
Scenario 
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links. 
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices. 
Use appropriate show commands to troubleshoot the issues and answer all four questions. 
Instructions 
 
 
 
    
An OSPF neighbor adjacency is not formed between R3 in the main office and R5 in the Branch2 office. What is causing the problem?

  • A: There is an area ID mismatch.
  • B: There is a PPP authentication issue; a password mismatch.
  • C: There is an OSPF hello and dead interval mismatch.
  • D: There is a missing network command in the OSPF process on R5.



Question 6
Scenario 
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links. 
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices. 
Use appropriate show commands to troubleshoot the issues and answer all four questions. 
Instructions 
 
 
 
    
R1 does not form an OSPF neighbor adjacency with R2. Which option would fix the issue?

  • A: R1 ethernet0/1 is shutdown. Configure no shutdown command.
  • B: R1 ethernet0/1 configured with a non-default OSPF hello interval of 25; configure no ip ospf hello-interval 25
  • C: R2 ethernet0/1 and R3 ethernet0/0 are configured with a non-default OSPF hello interval of 25; configure no ip ospf hello-interval 25
  • D: Enable OSPF for R1 ethernet0/1; configure ip ospf 1 area 0 command under ethernet0/1.



Question 7
Scenario 
Refer to the topology. Your company has decided to connect the main office with three other remote branch offices using point-to-point serial links. 
You are required to troubleshoot and resolve OSPF neighbor adjacency issues between the main office and the routers located in the remote branch offices. 
Use appropriate show commands to troubleshoot the issues and answer all four questions. 
Instructions 
 
 
 
 
An OSPF neighbor adjacency is not formed between R3 in the main office and R6 in the Branch3 office. What is causing the problem?

  • A: There is an area ID mismatch.
  • B: There is a PPP authentication issue; the username is not configured on R3 and R6.
  • C: There is an OSPF hello and dead interval mismatch.
  • D: The R3 router ID is configured on R6.



Question 8
What are three advantages of VLANs? (Choose three.)

  • A: They establish broadcast domains in switched networks.
  • B: They provide a low-latency internetworking alternative to routed networks.
  • C: They utilize packet filtering to enhance network security.
  • D: They can simplify adding, moving, or changing hosts on the network.
  • E: They allow access to network services based on department, not physical location.
  • F: They provide a method of conserving IP addresses in large networks.



Question 9
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 interfaces Serial 0/2/0
  • C: router#show ip interface s0/2/0
  • D: router#show ip interface brief



Question 10
Which function of the IP SLAs ICMP jitter operation can you use to determine whether a VoIP issue is caused by excessive end-to-end time?

  • A: packet loss
  • B: jitter
  • C: successive packet loss
  • D: round-trip time latency









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