Which of the following best describes the function of the service label?

In the diagram, R3 receives an LSA with sequence number 112 from R7 and installs it in its link state
database. 10 ms. Later it receives a copy of the same LSA with a sequence number of 111 from R1. What
does R3 do with the LSA from R1?

With a subnet mask of 255.255.255.224, which of the IP addresses below are valid host addresses? (Choose all that apply)

What happens in a TCP session if a segment is not acknowledged within a certain time period?

Which of the following are considered Virtual Private Network (VPN) technologies? (Choose three.)