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CCNA · 200-301

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Sample questionMultiple choice

A Network Security Engineer is investigating why hosts in 10.16.64.0/19 are unable to communicate with 10.16.0.0/19 despite both VLANs existing on a newly deployed switch. The engineer retrieves the MAC address table and routing table via an automation tool to perform the diagnosis:

Switch# show mac address-table
          Mac Address Table
-------------------------------------------
Vlan    Mac Address       Type        Ports
----    -----------       --------    -----
 10     0000.1111.2222    DYNAMIC     Gi1/0/1
 20     0000.3333.4444    DYNAMIC     Gi1/0/2
Switch# show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
Gateway of last resort is not set
      10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C        10.16.0.0/19 is directly connected, Vlan10
L        10.16.0.1/32 is directly connected, Vlan10
C        10.16.64.0/19 is directly connected, Vlan20
L        10.16.64.1/32 is directly connected, Vlan20

Which statements describe capabilities evidenced by these tables rather than prove successful host-to-host forwarding? (Choose 3.)

  1. A.When permitted and resolved packets are forwarded between the shown connected SVI subnets, the device builds a new egress Layer 2 frame.Correct answer
  2. B.The device separates broadcast domains, ensuring that MAC broadcasts in VLAN 10 do not flood into VLAN 20.Correct answer
  3. C.The device operates exclusively as a Layer 2 switch because the gateway of last resort is currently not set.
  4. D.The device is actively functioning as a Layer 3 switch because it has populated a routing table with connected SVIs.Correct answer
  5. E.The device relies on an external default gateway router to forward traffic between the directly connected VLANs.
Why this is correct
When permitted packets route between VLANs, the switch builds a new egress L2 frame Distinct VLANs separate L2 broadcast flooding domains Connected and local SVI entries establish the shown Layer3 routing-table capability
Knowledge domain: Network FundamentalsLearning topic: Explain the role and function of network componentsDifficulty: intermediate

Subject coverage

Knowledge domains covered in this subject

These weights describe the full subject blueprint. Free-test questions are selected randomly from the available question pool.

Network Fundamentals20%
Network Access20%
IP Connectivity25%
IP Services10%
Security Fundamentals15%
Automation and Programmability10%

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