Share some CCNA Routing and Switching 200-125 exam questions and answers below.
Which three circumstances can cause a GRE tunnel to be in an up/down state? (Choose three.)
A. The tunnel interface IP address is misconfigured.
B. The tunnel interface is down.
C. A valid route to the destination address is missing from the routing table.
D. The tunnel address is routed through the tunnel itself.
E. The ISP is blocking the traffic.
F. An ACL is blocking the outbound traffic.
Answer: BCD
What feature uses a random time to re-sent a frame?
A. CSMA/CA
B. CSMA/CD
Answer: B
What is the status of port-channel if LACP is misconfigured?
A. Forwarding
B. Enabled
C. Disabled
D. errdisabled
Answer: D
Which three statements accurately describe Layer 2 Ethernet switches? (Choose three.)
A. Spanning Tree Protocol allows switches to automatically share VLAN information.
B. Establishing VLANs increases the number of broadcast domains.
C. Switches that are configured with VLANs make forwarding decisions based on both Layer 2 and Layer 3 address information.
D. Microsegmentation decreases the number of collisions on the network.
E. In a properly functioning network with redundant switched paths, each switched segment will contain one root bridge with all its ports in the forwarding state. All other switches in that broadcast domain will have only one root port.
F. If a switch receives a frame for an unknown destination, it uses ARP to resolve the address.
Answer: B,D,E
Which two statements about late collisions are true? (Choose two.)
A. They may indicate a duplex mismatch.
B. By definition, they occur after the 512th bit of the frame has been transmitted.
C. They indicate received frames that did not pass the FCS match.
D. They are frames that exceed 1518 bytes.
E. They occur when CRC errors and interference occur on the cable.
Answer: AB
After you configure the Loopback0 interface, which command can you enter to verify the status of the interface and determine whether fast switching is enabled?
A. Router#show ip interface loopback 0
B. Router#show run
C. Router#show interface loopback 0
D. Router#show ip interface brief
Answer: A
Which two statements about IPv6 and routing protocols are true? (Choose two.)
A. EIGRPv3 was developed to support IPv6 routing.
B. OSPFv3 was developed to support IPv6 routing.
C. Loopback addresses are used to form routing adjacencies.
D. EIGRP, OSPF, and BGP are the only routing protocols that support IPv6.
E. Link-local addresses are used to form routing adjacencies.
Answer: BE
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.
Answer: BCF
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