Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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- Draw a deterministic finite automaton (DFA) that recognizes the language consisting of strings overthe alphabet {a,b} which contain either exactly two a's (which need not be consecutive) and anynumber of b's, or exactly two b's (which need not be consecutive) and any number of a's (and containsonly such strings.) Use JFLAP and submit the saved file.arrow_forwardCan you please help me with this question because I am struggling on how to answer this question, can you please do the turning machine with circles or drawing something that will help me understand ti visually. I put a photo for you to understand what I mean I need something like that to help me understand. Can you please help me with this question I need help with part B. question that I need help with:3.8 Give implementation-level descriptions of Turing machines that decide the following languages over the alphabet {0,1}. b. {w| w contains twice as many 0s as 1s}arrow_forwardCan you please help me with this problem because I don't understand how to do this problem. Can you please help me with this problem. Can you please explain this step by step.arrow_forward
- Let L1, L2, and L3 be languages over some alphabet. In each case below, two languages are given. Say what the relationship is between them. (Are they always equal? If not, is one always a subset of the other?) Give reasons for your answers, including counterexamples if appropriate. 1. L1(L20L3), L1L20LL3 2. LinL;, (L nL2)*arrow_forwarduse this link to simulate http:// automatonsimulator.com/arrow_forwardI keep getting the wrong answer can you please help me with this: Could you assist me with question 2.7 part C? I'm having difficulty with this problem and would greatly appreciate help in creating a state diagram for the push-down automaton in part C. question for 2.7 2.7 Give informal English descriptions of PDAs for the language. c. {w#x | w R is a substring of x for w, x ∈ {0,1} ∗ }arrow_forward
- Consider the language L of strings over the alphabet Σ = {a, b} which contain an equal number of a’s and b’s, and the set of b’s is consecutive in the string, e.g., ab, abba, aabb, abbbaa, aaabbbbbaa, etc. Note that ε ∈ L for completeness (0 number of a’s is equal to 0 number of b’s, which are also consecutive). Show that this language is context-free by giving a context-free grammar. Please make sure to test the answers onhttps://web.stanford.edu/class/archive/cs/cs103/cs103.1156/tools/cfg/arrow_forwardConstruct a CFG and PDA for the language B={w| w is a string over {a,b} with the same count of a's and b's}. For example, abba € B, abab e B,aabb € B, babbbaaaba € B, that is, there is no particular order in which a's and b's appear in w as long as there is the same amount of them.arrow_forwardConstruct a PDA that matches all strings in the language over {x,y} such that each string has an odd length and its middle symbol is 'x'. Editor Below, give a short description of the set of strings associated with each state of your PDA.arrow_forward
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