CrashCourse Computer Science: Internet and Networking

What is the first connection your computer makes to access the internet?

• Wide Area Network (WAN)

• Local Area Network (LAN)

• Internet Service Provider (ISP)

• Backbone of the internet

What program can you use to see the route data takes to different places on the internet?

• Wireshark

• Netstat

• Traceroute

• Ping

What is the main function of the Internet Protocol (IP)?

• To encrypt data

• To provide a unique address for each packet

• To ensure data integrity

• To manage data flow

What additional information does the UDP header contain besides the data payload?

• Timestamp

• Sequence number

• Port number

• Encryption key

What is the purpose of a checksum in a UDP header?

• To encrypt the data

• To verify data correctness

• To manage data flow

• To provide a unique address

What happens if a UDP packet is found to be corrupted?

• It is retransmitted

• It is discarded

• It is corrected

• It is flagged for review

What protocol is used when data 'absolutely, positively needs to get there'?

• DNS

• TCP

• IP

• UDP

What feature of TCP allows it to put packets in the correct order?

• Acknowledgments

• Checksums

• Sequence numbers

• Port numbers

Why might someone choose to use UDP over TCP?

• For guaranteed delivery

• For faster and simpler transmission

• For better data integrity

• For encryption

What service maps domain names to IP addresses?

• SMTP

• DNS

• FTP

• HTTP