In the 802.11 CSMA/CA protocol several Interframe intervals are defined. The following is typically the shortest:

Consider a Go-Back-N protocol with a sender window size of 4, a sequence number range of 32 and a message of 100 packets that needs to be sent. Suppose that the sender at some point in time has a window of packets with sequence numbers 6, 7, 8, and 9 and gets an ack labeled 8. Then the sender should:

If the Hamming distance of a code is 8, the maximum number of errors that can be corrected and detected is, respectively:

The strategy used in non-persistent CSMA is:

Suppose a loaded dice has a probability of throwing a 1 or a 6 to be ¼ each. Suppose the probabilities of the other 4 numbers are equal to each other. Suppose two such loaded dice are thrown. What is the probability of getting a sum of 4?

A 4 kHz signal is properly sampled and quantized with a resulting bit rate of 64 kbps. What is the number of bits of quantization?

Design a piece of recombinant DNA expressing a gene of interest with a blue fluorescence protein in the 3′ region (or C-terminal) of the gene. Organize the DNA fragments below based on the correct position.   1 2 3 4 5  

Which equation best represents the balanced net ionic equation for the reaction that occurs when aqueous solutions of sodium phosphate and calcium nitrate are mixed?  

Determine which substance is reduced but it also acts as an oxidizing  agent in the following reaction. Note: the element or ion in the substance only is either oxidized or reduced.             2 Li(s) + Fe(C2H3O2)2(aq)  →  2 LiC2H3O2(aq) + Fe(s)

What will be the balanced chemical equation when you mix  the aqueous KHCO3 and H2SO4?