Checkpoint · revision 1

Computer Networks Checkpoint

Check how subnetting, DNS, TCP, and HTTP cooperate during a browser request.

Scenario

A browser must reach a named service outside its local subnet and retrieve a resource reliably.

Question 1

How many total IPv4 addresses are in a /26 subnet?

addresses

Question 2

Which system resolves scifunlab.com to an IP address?

DNSHTTPCSSSQL

Question 3

What is the second message in the TCP three-way handshake?

SYNSYN-ACKACKFIN

Question 4

Which HTTP status code normally indicates a successful request?

status code

Answer keys, scoring tolerance, XP, and awards stay on the server. Retrying the same attempt cannot award twice.