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A binary message consisting of four bits was sent to you by a friend. The message was supposed to be ABAB. Unfortunately, your friend set the bit on the wire once every 2 seconds, but you read the wire once every second. Assuming that the first bit was sent and read at the same time, what message did you receive instead?
A. ABABB. AABBC. AAAAD. BBBBE. ABBB

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Answer:

ABBB

Explanation:

The first bit is sent and read at the same time, and thus, it is "A".

The second bit is sent after 2 seconds, but the reader reads after each second. So, the second, third and fourth terms are all B.

Hence, the overall message is ABBB, and the above option is the correct answer. The others are showing five bits and thus, those options are not the correct ones.

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