QUESTIONS:

$1.$How do a router and a switch differ? Please provide two differences.

$2.$ Given the code polynomial x$3+$x$+1,$ answer the following questions.

a$.$ Given the data bits $1101010011$ that need to be transmitted to a remote host, calculate the

message to be sent, including the CRC check bits. Be sure to show your work.

b$.$ The message $1001101011010$ which includes CRC check bits using the code polynomial

mentioned above, has been received by the remote host. Determine whether this message

contains any errors. Be sure to show your work.