Consider a soldier facing in a given direction (say north). Let us denote "left face" by ℓ, "right face" by r, "about face" by a, and "stand fast" by f. (The element f means "don't move from your present position." It does not mean "return to your original position.") Then we define H = {ℓ, r, a, f} and an operation meaning "followed by." Thus, ℓ ℓ = a means "left face" followed by "left face" and is the same as the single command "about face." Complete the following table. ℓ r a f ℓ a r a f
Consider a soldier facing in a given direction (say north). Let us denote "left face" by ℓ, "right face" by r, "about face" by a, and "stand fast" by f. (The element f means "don't move from your present position." It does not mean "return to your original position.") Then we define H = {ℓ, r, a, f} and an operation meaning "followed by." Thus, ℓ ℓ = a means "left face" followed by "left face" and is the same as the single command "about face." Complete the following table. ℓ r a f ℓ a r a f
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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Question
Consider a soldier facing in a given direction (say north). Let us denote
"left face" by ℓ,
"right face" by r,
"about face" by a, and
"stand fast" by f.
"right face" by r,
"about face" by a, and
"stand fast" by f.
(The element f means "don't move from your present position." It does not mean "return to your original position.") Then we define
H = {ℓ, r, a, f}
and an operation meaning "followed by." Thus, ℓ ℓ = a means "left face" followed by "left face" and is the same as the single command "about face." Complete the following table.
| ℓ | r | a | f | |
| ℓ | a | |||
| r | ||||
| a | ||||
| f |
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