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Share some CCIE 400-101 exam questions and answers below.
Your network is suffering excessive output drops.Which two actions can you take to resolve the problem? (Choose two.) 
A. Install a switch with larger buffers. 
B. Configure a different queue set. 
C. Reconfigure the switch buffers. 
D. Configure the server application to use TCP. 
E. Update the server operating system. 
Answer: AB

The OSPF adjacency between two routers cannot be established.What is the root cause of the problem? 
A. Both routers are designated routers. 
B. different area ID 
C. mismatched OSPF network types 
D. authentication error 
E. area type mismatch 
Answer: E

What are two mechanisms that directed ARP uses to help resolve IP addresses to hardware addresses? (Choose two) 
A. It removes address-resolution restrictions, allowing dynamic protocols to advertise rou information for the device loopback address. 
B. It uses ICMP redirects to advertise next-hop addresses to foreign hosts. 
C. It uses series of ICMP echo messages to relay next-hop addresses. 
D. It removes address-resolution restrictions, allowing dynamic protocols to advertise routing information for the next-hop address. 
E. It uses a proxy mechanism to allow a device to respond to ARP requests for the addresses of other devices. 
Answer: BD

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