CCNA 200-125 Exam: Trunking Questions 2 With Answers

  1. Which DTP switchport mode allow the port to create a trunk port if the the port is in trunk, dynamic auto and dynamic desirable mode?
    • A. Dynamic Auto
    • B. Dynamic Desirable*
    • C. Access
    • D. Trunk
  2. What is the function of the command switchport trunk native vlan 999 on a trunk port?
    • A. It designates VLAN 999 for untagged traffic.*
    • B. It blocks VLAN 999 traffic from passing on the trunk.
    • C. It creates a VLAN 999 interface.
    • D. It designates VLAN 999 as the default for all unknown tagged traffic.
  3. Refer to the exhibit:

    CCNA 200-125 Exam: Trunking Questions 2 With Answers 1

    How should the FastEthernet0/1 port on the 2950 model switches that are shown in the exhibit be
    configured to allow connectivity between all devices?

    • A. The ports only need to be connected by a crossover cable.
    • B. SwitchX (config)#interface FastEthernet 0/1
      SwitchX(config-if)#switchport mode trunk *
    • C. SwitchX (config)#interface FastEthernet 0/1
      SwitchX(config-if)#switchport mode access
      SwitchX(config-if)#switchport access vlan 1
    • D. SwitchX (config)#interface FastEthernet 0/1
      SwitchX(config-if)#switchport mode trunk
      SwitchX(config-if)#switchport trunk vlan 1
      SwitchX(config-if)#switchport trunk vlan 10
      SwitchX(config-if)#switchport trunk vlan 20
  4. Refer to the exhibit:

    CCNA 200-125 Exam: Trunking Questions 2 With Answers 2

    Which two statements are true of the interfaces on Switch1? (Choose two)

    • A. Interface FastEthernet0/2 has been disabled.
    • B. Multiple devices are connected directly to FastEthernet0/1.
    • C. FastEthernet0/1 is configured as a trunk link.*
    • D. FastEthernet0/1 is connected to a host with multiple network interface cards
    • E. FastEthernet0/5 has statically assigned MAC addresses.
    • F. A hub is connected directly to FastEthernet0/5*

    Show (Hide) Explanation/Reference
    From the “show mac address-table” output, we see FastEthernet0/1 can receive traffic from multiple VLANs -> it is configured as a trunk. Also from the “show cdp neighbors” output, we see Fa0/1 of this switch is connecting to Switch2 so it is configured as a trunk.

    There are two MAC addresses learned from FastEthernet0/5 while FastEthernet0/5 is not configured as trunk (only Fa0/2 & Fa0/3 are configured as trunk links) -> a hub is used on this port.

  5. Which IEEE standard protocol is initiated as a result of successful DTP completion in a switch over FastEthernet?
    • A. 802.3ad
    • B. 802.1w
    • C. 802.1Q*
    • D. 802.1d

    Show (Hide) Explanation/Reference
    Dynamic Trunking Protocol (DTP) is a Cisco proprietary protocol for negotiating trunking on a link between two devices and for negotiating the type of trunking encapsulation (802.1Q) to be used.
  6. Which three of these statements regarding 802.1Q trunking are correct? (Choose three)
    • A. 802.1Q native VLAN frames are untagged by default.*
    • B. 802.1Q trunking ports can also be secure ports.
    • C. 802.1Q trunks can use 10 Mb/s Ethernet interfaces.*
    • D. 802.1Q trunks require full-duplex, point-to-point connectivity.
    • E. 802.1Q trunks should have native VLANs that are the same at both ends.*
  7. What are the possible trunking modes for a switch port? (Choose three)
    • A. transparent
    • B. auto*
    • C. on*
    • D. desirable*
    • E. client
    • F. forwarding

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