Coursera The Five-Layer Network Model Graded Quiz
Computer 1 on network A, with IP address of 10.1.1.8, wants to send a packet to Computer 2, with IP address of 172.16.1.64. If the TTL value was set to 64 at the beginning, what is the value of the TTL once it reaches its destination?
62
Computer 1 on network A, with IP address of 10.1.1.10, wants to send a packet to Computer 2, with IP address of 192.168.1.14. If the TTL value was set to 64 at the beginning, what is the value of the TTL once it reaches its destination?
63
When constructing the Ethernet datagram to send the packet from Router Z to Computer 2 which is on Network C, what information needs to be in the destination MAC address?
Computer 2's MAC address
Computer 1 on Network A sends a packet to Computer 2 on Network C. What's the last step that Router Z does after receiving the Ethernet frame?
Decrements the TTL by 1, calculates a new checksum, and makes a new IP datagram. This new IP datagram is again encapsulated on a new Ethernet frame.
Computer 1 wants to send a packet to Computer 2. Since computer 2 is not on the local network, Computer 1 checks the ARP table for the corresponding ______ that matches the gateway IP.
MAC address
Computer 1 on network A, with the IP address of 10.1.1.8, wants to send a packet to Computer 2, with the IP address of 10.1.1.10. On which network is computer 2?
Network A
Computer 1 on network B, with IP address of 192.168.1.233, wants to send a packet to Computer 2, with IP address of 10.1.1.205. On which network is computer 2?
Network A
Which layer constructs the IP datagram?
Network layer
The ________ layer is responsible for sending ones and zeros through a process called modulation from Computer 1 to Computer 2.
Physical
When constructing the Ethernet datagram to send the packet from computer 1 to its gateway (Router Y), what information needs to be in the destination MAC address?
Router Y's MAC address
Computer 1 on network A, with IP address of 10.1.1.8, wants to send a packet to Computer 2, with IP address of 10.1.1.205. Taking in consideration that computer 1 is sending a FTP request to computer 2, and the source port on computer 1 is 21086, which of the following contains the correct information for the first TCP segment of data?
Source Port: 21086 Destination Port: 21 Sequence Number: 1 Acknowledgment Number: 2
Computer 1 on Network A sends a packet to Computer 2 on Network C. What's the second step that Router Z does after receiving the Ethernet frame?
Strips away the Ethernet frame, leaving the IP datagram. Performs a checksum calculation against the entire datagram
If it's a TCP connection, which is the first segment that computer 1 needs to build?
TCP segment
What information is in the data payload for the IP datagram?
TCP segment
Computer 1 on network B, with IP address of 192.168.1.121, wants to send a packet to Computer 2, with IP address of 10.1.1.8. Taking in consideration that computer 1 is sending a request to a web server on computer 2, listening on port 80, and the source port on computer 1 is 5000, which of the following contains the correct information for the first TCP segment of data?
The answer is NOT: Source Port: 8081 Destination Port: 50 Sequence Number: 4 Acknowledgement Number: 1
What information is in the payload section of the TCP segments?
The application layer data
Computer 1 on network A, with IP address of 10.1.1.10, wants to send a packet to Computer 2, with IP address of 172.16.1.64. Which of the following has the correct IP datagram information for the fields: Version, minimum Header Length, Source IP, and Destination IP?
Version: 4 Header Length: 20 Source IP Address: 10.1.1.10 Destination IP address: 172.16.1.64
Computer 1 on network B, with IP address of 192.168.1.121, wants to send a packet to Computer 2, with IP address of 172.16.1.57. Which of the following has the correct IP datagram information for the fields: Version, minimum Header Length, Source IP, and Destination IP?
Version: 4 Header Length: 20 Source IP Address: 192.168.1.121 Destination IP address: 172.16.1.57
