Download CCNA Cisco Certified Network Associate.200-125.ExamTopics.2026-03-01.137q.vcex

Vendor: Cisco
Exam Code: 200-125
Exam Name: CCNA Cisco Certified Network Associate
Date: Mar 01, 2026
File Size: 7 MB
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Demo Questions

Question 1
Which IPv6 address is valid?
  1. 2031:0:130F::9C0:876A:130B
  2. 2001:0db8:0:130H::87C:140B
  3. 2001:0db8:0000:130F:0000:0000:08GC:140B
  4. 2031::130F::9C0:876A:130B
Correct answer: A
Question 2
Which value is used to determine the active router in an HSRP default configuration?
  1. Router loopback address
  2. Router IP address
  3. Router priority
  4. Router tracking number
Correct answer: B
Question 3
Which two protocols can detect native VLAN mismatch errors? (Choose two.)
  1. STP
  2. PAgP
  3. Cisco Discovery Protocol
  4. DTP
  5. VTP
Correct answer: AC
Question 4
How many bits are contained in each field of an IPv6 address?
  1. 24
  2. 4
  3. 8
  4. 16
Correct answer: D
Question 5
Which logging command can enable administrators to correlate syslog messages with millisecond precision?
  1. no logging console
  2. logging buffered 4
  3. no logging monitor
  4. service timestamps log datetime mscec
  5. logging host 10.2.0.21
Correct answer: D
Question 6
Which two circumstances can cause collision domain issues on VLAN domain? (Choose two.)
  1. duplex mismatches on Ethernet segments in the same VLAN
  2. multiple errors on switchport interfaces
  3. congestion on the switch inband path
  4. a failing NIC in an end device
  5. an overloaded shared segment
Correct answer: AC
Explanation:
Collision Domains -A collision domain is an area of a single LAN where end stations contend for access to the network because all end stations are connected to a shared physical medium. If two connected devices transmit onto the media at the same time, a collision occurs. When a collision occurs, a JAM signal is sent on the network, indicating that a collision has occurred and that devices should ignore any fragmented data associated with the collision. Both sending devices back off sending their data for a random amount and then try again if the medium is free for transmission. Therefore, collisions effectively delay transmission of data, lowering the effective throughput available to a device. The more devices that are attached to a collision domain, the greater the chances of collisions; this results in lower bandwidth and performance for each device attached to the collision domain. Bridges and switches terminate the physical signal path of a collision domain, allowing you to segment separate collision domains, breaking them up into multiple smaller pieces to provide more bandwidth per user within the new collision domains formed.
Collision Domains -
A collision domain is an area of a single LAN where end stations contend for access to the network because all end stations are connected to a shared physical medium. If two connected devices transmit onto the media at the same time, a collision occurs. When a collision occurs, a JAM signal is sent on the network, indicating that a collision has occurred and that devices should ignore any fragmented data associated with the collision. Both sending devices back off sending their data for a random amount and then try again if the medium is free for transmission. Therefore, collisions effectively delay transmission of data, lowering the effective throughput available to a device. The more devices that are attached to a collision domain, the greater the chances of collisions; this results in lower bandwidth and performance for each device attached to the collision domain. Bridges and switches terminate the physical signal path of a collision domain, allowing you to segment separate collision domains, breaking them up into multiple smaller pieces to provide more bandwidth per user within the new collision domains formed.
Question 7
Which two statements about switch stacking are true? (Choose two)
  1. The stack is powered by a single power cable
  2. The switches are connected in a daisy-chain fashion
  3. The first and last switch in the stack must be connected to one another
  4. The switches are connected by crossover cables
  5. The switches must be fully meshed
Correct answer: AB
Question 8
Which condition does the err-disabled status indicate on an Ethernet interface?
  1. There is a duplex mismatch.
  2. The device at the other end of the connection is powered off.
  3. The serial interface is disabled.
  4. The interface is configured with the shutdown command.
  5. Port security has disabled the interface.
  6. The interface is fully functioning.
Correct answer: E
Question 9
Instructions -
This item contains several questions that you must answer. You can view these questions by clicking on the corresponding button to the left. Changing questions can be accomplished by clicking the numbers to the left question. In order to complete the questions, you will need to refer to the topology.
To gain access to the topology, click on the topology button of the screen. When you have finished viewing the topology, you can return to your questions by clicking on the Questions button to the left.
Each of the windows can be minimized by clicking on the [-]. You can also reposition a window by dragging it by the title bar.
Scenario -
Refer to the topology. The diagram represents a small network with a single connection to the Internet.
If the router R1 has a packet with a destination address 192.168.1.255, what describes the operation of the network?
  1. R1 will forward the packet out all interfaces.
  2. R1 will drop this packet because this it is not a valid IP address.
  3. As R1 forwards the frame containing this packet, Sw-A will add 192.168.1.255 to its MAC table.
  4. R1 will encapsulate the packet in a frame with a destination MAC address of FF-FF-FF-FF-FF-FF.
  5. As R1 forwards the frame containing this packet, Sw-A will forward it to the device assigned the IP address of 192.168.1.255. B
Correct answer: Explanation
Question 10
Which command can you enter to verify that a 128-bit address is live and responding?
  1. traceroute
  2. telnet
  3. ping
  4. show ipv6
Correct answer: C
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