Instructions
This is an untimed, open book, open note, and open Canvas site exam.
You may start the exam and come back to it before the due date. DO NOT submit the exam until you have answered all the questions.
It is 26 questions in length. The questions are multiple choice and short answer.
Attempt History
Consider the unsigned decimal number 35. What is the value in hexadecimal?
35
Question 4 3 / 3 pts
Consider the eight bit signed binary number 1110 0101. Convert it to signed decimal from assuming the signed binary number is represented using two’s compliment.
1110 0101
Question 2 3 / 3 pts
Consider the eight bit signed binary number 1110 0101. Convert it to signed decimal from assuming the signed binary number is represented using signed magnitude.
1110 0101
Question 3 3 / 3 pts
Consider the eight bit signed binary number 1110 0101. Convert it to signed decimal from assuming the signed binary number is represented using one’s compliment.
1110 0101
Question 6 4 / 4 pts
The truth table for a Boolean function F(a, b, c) is given below:
Which representation of F, using sum of products Boolean expression, is correct. They are not minimized.
Question 5 5 / 5 pts
Consider the following 32 bit binary representation of the value using IEEE 754 single precision floating point representation. Show the corresponding signed number in decimal.
01000001001010100000000000000000
Question 7 4 / 4 pts
The truth table for a Boolean function F(a, b, c) is given below:
Which diagram most closely matches the function F.
Question 9 3 / 3 pts
Question 8 5 / 5 pts
A cache-based system experiences a cache hit rate of 90%. A cache hit requires 1 clock cycle and a main memory access requires 10 clock cycles. Main memory is only accessed after a cache miss. On a cache miss, the cache is updated from main memory and the read is made from cache.
What is the Effective Access Time (EAT) for this system? Give you answer in terms of clock cycles.
Question 10 3 / 3 pts
Suppose that a computer using a set-associative cache has 220 words of main memory and a cache of 64 blocks, where each cache block contains 16 words.
If this cache is 8 way set associative, what is the format of the memory address as seen by the cache? In particular, what are the sizes of the tag, set and word fields?
word: 4 bits set: 3 bits tag: 13 bits
Question 12 3 / 3 pts
IP best matches which layer of the OSI reference model?
Question 14 5 / 5 pts
A TCP connection is made between Port 234 on Host A (with IPv4 address 192.168.2.101) and Port 80 on Host B (with IPv4 address of 192.168.1.2).
Which of the values of the following fields in the packets sent from Host A to Host B are correct.
Question 13 4 / 4 pts
A TCP connection is made between Port 234 on Host A (with IPv4 address 192.168.2.101) and Port 80 on Host B (with IPv4 address of 192.168.1.2).
What is the minimum number of TCP segments that must be sent to establish a connection?
Question 15 5 / 5 pts
A TCP connection is made between Port 234 on Host A (with IPv4 address 192.168.2.101) and Port 80 on Host B (with IPv4 address of 192.168.1.2).
At some point after the connection is established, Host A sends Host B a
TCP segment with the TCP header values given below in decimal. The ACK and PSH flags are true (contains a 1 bit) and all other flags are false (contains a 0 bit).
* Sequence number = 1,240
* Acknowledgment (ACK) number = 9,080 – requested
* Window = 10
What range of bytes should be now be sent from Host B to host A without any additional acknowledgment being sent from Host A to host B?
Question 17 3 / 3 pts
Consider a subnet identified as follows: 192.168.31.0/26.
Using the IP ranges from this subnet, what is the IP network mask used by hosts on the subnet?
Use dotted-decimal notation for the answer.
Question 18 8 / 8 pts
Consider the routing tables for Router 1 (R1) and Router 2 (R2) as given below.
Router 1 uses the routing table at Router 2 to update its routing table. Complete the new routing table for Router 1 below. Router 1 and Router 2 are adjacent, i.e. they are 1 hop apart.
Question 19 4 / 4 pts
Destination Next
Hop Hop Count
A R4 2
B — 0
C R3 4
D R8 3
Router R1
Router R1
Destination Next
Hop Hop Count
A R2 1
B — 0
C R2 3
D R8 3
Router R1
Destination Next
Hop Hop Count
A R4 2
B R2 1
C R2 3
D R8 3
Router R1
Destination Next
Hop Hop Count
A R2 1
B — 0
C R2 3
D R2 4
Question 20 3 / 3 pts
Consider RAID Level 5 (RAID-5).
Select the advantages of RAID-5 relative to other RAID schemes.
Question 21 3 / 3 pts
Consider RAID Level 5 (RAID-5).
Question 23 3 / 3 pts
Consider the four types of input/output control discussed in this class.
Question 24 3 / 3 pts
Host X retrieves a single HTML file from the HTTP server on Host Y.
Host Y sends the first TCP SYN message for the transaction?
Quiz Score: 81 out of 100
