Do NOT exceed the N and P❘ limits. • If the language cannot be generated by ANY context-free grammar write "Not Context-Free". • If limits are specified and it is not possible to design a CFG within the given limits that generates the given language, write "Not Enough |N| or |P|" and design a CFG with minimal |N|+|P| as possible. 1. E= {a,b) L = {w€ Σ" | w=a²n³n for some n>0} |N| ≤ 1,|P| ≤4 Accepted: A, aabbb, aaaabbbbbb, aaaaaabbbbbbbbb Rejected: aabb, aaab, babab, abaaa 2. E= {0,1} L = {w€ Σ" | ww²} |N| ≤ 2,|P| ≤ 11 Accepted: 0100, 10111, 010101, 111110 Rejected: A, 11011, 101, 01010, 1111 3. E={a,b,c} L = {w€ Σ" | w = 6c ^ó, ½ € {a,b}* ^ ¢® is a substring of} |N| ≤ 3,|P| ≤ 11 Accepted: abbacbbbabbab, abcaaba, abbcbbabbb, aca Rejected: abc, babcbaa, aacbb, bacaaa

Do NOT exceed the N and P❘ limits. • If the language cannot be generated by ANY context-free grammar write "Not Context-Free". • If limits are specified and it is not possible to design a CFG within the given limits that generates the given language, write "Not Enough |N| or |P|" and design a CFG with minimal |N|+|P| as possible. 1. E= {a,b) L = {w€ Σ" | w=a²n³n for some n>0} |N| ≤ 1,|P| ≤4 Accepted: A, aabbb, aaaabbbbbb, aaaaaabbbbbbbbb Rejected: aabb, aaab, babab, abaaa 2. E= {0,1} L = {w€ Σ" | ww²} |N| ≤ 2,|P| ≤ 11 Accepted: 0100, 10111, 010101, 111110 Rejected: A, 11011, 101, 01010, 1111 3. E={a,b,c} L = {w€ Σ" | w = 6c ^ó, ½ € {a,b}* ^ ¢® is a substring of} |N| ≤ 3,|P| ≤ 11 Accepted: abbacbbbabbab, abcaaba, abbcbbabbb, aca Rejected: abc, babcbaa, aacbb, bacaaa

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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