Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Chapter 9, Problem 7PE
Explanation of Solution
Explanation:
- The tester must run “netstat” to get all connections open to the socket or machine utilized by the
database .- When the database server is separate from the application server, the command “netstat” may be executed at any one of the two machines.
- The webpage currently being tested must be repeatedly accessed.
- This could be typically automated by employing tools like “JMeter” to produce page accesses...
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Refer to page 60 for solving the Knapsack problem using dynamic programming.
Instructions:
•
Implement the dynamic programming approach for the 0/1 Knapsack problem.
Clearly define the recurrence relation and show the construction of the DP table.
Verify your solution by tracing the selected items for a given weight limit.
Link: [https://drive.google.com/file/d/1wKSrun-GlxirS3IZ9qoHazb9tC440AZF/view?usp=sharing]
Refer to page 70 for problems related to process synchronization.
Instructions:
•
•
Solve a synchronization problem using semaphores or monitors (e.g., Producer-Consumer,
Readers-Writers).
Write pseudocode for the solution and explain the critical section management.
•
Ensure the solution avoids deadlock and starvation. Test with an example scenario.
Link: [https://drive.google.com/file/d/1wKSrun-GlxirS31Z9qo Hazb9tC440AZF/view?usp=sharing]
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Consider the following scenario in which host 10.0.0.1 is communicating with an external SMTP mail server at IP
address 128.119.40.186.
NAT translation table
WAN side addr
LAN side addr
(c), 5051
(d), 3031
S: (e),5051
SMTP
B
D (f.(g)
10.0.0.4
server
138.76.29.7
128.119.40.186
(a) is the source IP address at A, and its value.
S: (a),3031
D: (b), 25
10.0.0.1
A
10.0.0.2.
1. 138.76.29.7
10.0.0.3
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- 9. Let L₁=L(ab*aa), L₂=L(a*bba*). Find a regular expression for (L₁ UL2)*L2. 10. Show that the language is not regular. L= {a":n≥1} 11. Show a derivation tree for the string aabbbb with the grammar S→ABλ, A→aB, B→Sb. Give a verbal description of the language generated by this grammar.arrow_forward14. Show that the language L= {wna (w) < Nь (w) < Nc (w)} is not context free.arrow_forward7. What language is accepted by the following generalized transition graph? a+b a+b* a a+b+c a+b 8. Construct a right-linear grammar for the language L ((aaab*ab)*).arrow_forward
- 5. Find an nfa with three states that accepts the language L = {a^ : n≥1} U {b³a* : m≥0, k≥0}. 6. Find a regular expression for L = {vwv: v, wЄ {a, b}*, |v|≤4}.arrow_forward15. The below figure (sequence of moves) shows several stages of the process for a simple initial configuration. 90 a a 90 b a 90 91 b b b b Represent the action of the Turing machine (a) move from one configuration to another, and also (b) represent in the form of arbitrary number of moves.arrow_forward12. Eliminate useless productions from Sa aA BC, AaBλ, B→ Aa, C CCD, D→ ddd Cd. Also, eliminate all unit-productions from the grammar. 13. Construct an npda that accepts the language L = {a"b":n≥0,n‡m}.arrow_forward
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