The following byte stream represents data received by the link layer of a computer. For simplicity, assume that there are no errors in the byte stream. Retrieve the original data of each frame within this received byte stream.

DLESTXASCDLEDLESETXDLEDLESTXDLEETXDLESTXATCPDLEETX

IMPORTANT: List each frame separately. If you do not have any more frames to list, enter N$/$A as your answer.

Do not include any leading or trailing spaces in your answer.

Frame Number Original Data

$1$

$2$

$3$

$4$

Flag question: Spacer

For the following two $(2)$ questions, assume that the link layer uses the flag bits with bit stuffing approach for framing, with the following details:

The beginning and end of a data frame are indicated by the special flag bits $01111110($i$.$e$.,0$x$7$E$).$

To handle accidental occurrence of the flag bits within the data, a $0$ bit is stuffed every time $5$ consecutive $1$s are found in the data.

For simplicity, assume that no other header$/$trailer information is added to the data.

Flag question: Question $5$

Question $53$ pts

The following bit stream represents data that needs to be framed by the link layer on the sender$$s side. Derive the resultant bit stream by adding necessary flag bits and performing bits stuffing.

$0111110001010011111111100101111111111110$

Do not include any leading or trailing spaces in your answer.

$01111110010100111111001011111011111001111110$

Flag question: Question $6$

Question $63$ pts

The following bit stream represents data received by the link layer of a computer. For simplicity, assume that there are no errors in the bit stream. Retrieve the original data from this received bit stream.

$01111110010111101111101100101001111101101111110$

Do not include any leading or trailing spaces in your answer.

$0101110111101100101001111011$