Question 1: Working with MARIE (12 Marks) a) Given the below pseudocode, write the proper code that
implements it using MARIE's assembly language:

Input a number and store it in X;

while X < 10 do

X = X + 1;

Output the value of X;

endwhile;

N. B: You should include the MARIE code in your Answer, with an

explanation of each instruction in your code beside it.

Example:

Add One /Add 1 to AC

b) Add a screenshot of the simulation, showing the result (A screenshot of

the MARIE Simulator window after running the program).

Instructions:

- Use “ORG” instruction to start your program at address 300.
- Use your last university ID number to input the new value of X.
For example, if your ID is1915161678235, then you will use the
number 5 as the value of x.
- Do not forget to change the representation of the Input and
Output windows in the simulator to Decimal.
- The following labels and directives should be included at the end
of your program:

X, Dec 0

One, DEC 1

Ten, DEC 10

Consider a slotted aloha system, where the time slot equals the fixed duration of each packet. assume that there are 4 stations a, b,c, d sharing the medium. (a) stations a, b,c, d receive one packet each from higher layers at times 1.3, 1.5, 2.6,5.7 respectively. show which transmissions take place when, according to the slottedaloha protocol; describe all transmissions until all four packets have been successful. when needed, each station has access to the following sequence of random number, provided by a random number generator and drawn uniformly between 0 and 1: (1) station a draws numbers: 0.31, 0.27, 0.78, 0.9, 0.9, 0.11, 0. (2) station b draws numbers: 0.45, 0.28, 0.11, 0.83, 0.37, 0.22, 0. (3)station c draws numbers: 0.1, 0.2, 0.3, 0.4, 0. (4) station d draws numbers: 0.36, 0.77, 0.9, 0.1, 0.1, 0.1, 0.1, 0. (b) in slotted aloha, a station transmits in each time slot with a given probability. what probabilities would you assign to each of the four stations so as to: (i) maximize the efficiency of the protocol? (ii) maximize fairness among the four stations? (c) will the efficiency increase or decrease if we modify slotted aloha as follows: (i) get rid of slots and allow stations to transmit immediately? (ii) implement carrier sensing? (iii) implement collision detection? (iv) implement collision avoidance?

Terri needs to insert a cover page into her document. where should she go to access the commands to do so? o insert tab, objects group o insert tab, illustrations group o insert tab, pages group o insert tab, media group submit

Acomputer has a two-level cache. suppose that 60% of the memory references hit on the first level cache, 35% hit on the second level, and 5% miss. the access times are 5 nsec, 15 nsec, and 60 nsec, respectively, where the times for the level 2 cache and memory start counting at the moment it is known that they are needed (e. g., a level 2 cache access does not even start until the level 1 cache miss occurs). what is the average access time?