Which four commands can be used in debugging DNS?
A DNS server is not responding to a DNS client’s requests. Which four commands can be used in debugging DNS? (Choose four.)
What is stored in DNS zone files?
What is stored in DNS zone files?
What is forward mapping?
What is forward mapping?
What is a link local address?
What is a link local address?
Which two statements regarding a switch are true?
Which two statements regarding a switch are true? (Choose two.)
Which two statements describe the function of a bridge?
Which two statements describe the function of a bridge? (Choose two.)
Which command adds a routing table entry with a route mask 255.255.255.192?
Given:
IP address netmask
192.20.20.75 255.255.255.192
You are adding a "network" specific route.
Presume the route has been deleted and you are establishing it.
Which command adds a routing table entry with a route mask 255.255.255.192?
Which command should you use to verify that the router is configured (in the kernel) to forward IP packets?
A router is refusing to forward IP packets. Snoop has revealed that packets are arriving on its interfaces, but it is refusing to forward packets and route them.
Which command should you use to verify that the router is configured (in the kernel) to forward IP packets?
Which command should you use to verify that you have recently received the MAC addresses of the workstation?
You are not sure if you have received an Ethernet frame from a workstation you are trying to reach by Telnet, which is on the same logical network. You may have a cabling fault.
Which command should you use to verify that you have recently received the MAC addresses of the workstation?
What would cause the error message “network unreachable”?
You are attempting to add a default router using the command route add default 192.20.20.1 0. You get the error message "network unreachable." The IP address of the host you are using is 192.20.20.10 and the router 192.20.20.1 is reachable via a "direct" route. The router 192.20.20.1 is on the network in question and is a viable default router.
What would cause the error message "network unreachable"?