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One way to avoid deadlock is to schedule threads carefully. Assume the following characteristics of threads T1, T2, T3 and T4: • T1 (at some point) acquires and releases locks L1, L2 and L5 T2 (at some point) acquires and releases locks L2, L3 and L4 • T3 (at some point) acquires and releases locks L1, L2 and L4 T4 (at some point) acquires and releases locks L3, L4 and L5 For which schedules below is deadlock possible? . (a) T4, T2, T3, and T1 run concurrently. (b) T1 and T2 run concurrently to completion, then T3 runs to completion, then T4 runs. (c) T1 and T3 run concurrently to completion, then T2 and T4 run concurrently to completion. (d) T2 and T4 run concurrently to completion, then T1 runs to completion. O (e) T1 and T4 run concurrently to completion, T1 finishes first after which T4 continuous to run to completion with T2.

One way to avoid deadlock is to schedule threads carefully. Assume the following characteristics of threads T1, T2, T3 and T4: • T1 (at some point) acquires and releases locks L1, L2 and L5 T2 (at some point) acquires and releases locks L2, L3 and L4 • T3 (at some point) acquires and releases locks L1, L2 and L4 T4 (at some point) acquires and releases locks L3, L4 and L5 For which schedules below is deadlock possible? . (a) T4, T2, T3, and T1 run concurrently. (b) T1 and T2 run concurrently to completion, then T3 runs to completion, then T4 runs. (c) T1 and T3 run concurrently to completion, then T2 and T4 run concurrently to completion. (d) T2 and T4 run concurrently to completion, then T1 runs to completion. O (e) T1 and T4 run concurrently to completion, T1 finishes first after which T4 continuous to run to completion with T2.

Computer Networking: A Top-Down Approach (7th Edition)
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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One way to avoid deadlock is to schedule threads carefully. Assume the following characteristics of threads T1, T2, T3 and T4: • T1 (at some point) acquires and releases locks L1, L2 and L5 • T2 (at some point) acquires and releases locks L2, L3 and L4 • T3 (at some point) acquires and releases locks L1, L2 and L4 • T4 (at some point) acquires and releases locks L3, L4 and L5 For which schedules below is deadlock possible? (a) T4, T2, T3, and T1 run concurrently. (b) T1 and T2 run concurrently to completion, then T3 runs to completion, then T4 runs. (c) T1 and T3 run concurrently to completion, then T2 and T4 run concurrently to completion. O (d) T2 and T4 run concurrently to completion, then T1 runs to completion. (e) T1 and T4 run concurrently to completion, T1 finishes first after which T4 continuous to run to completion with T2. O
Transcribed Image Text:One way to avoid deadlock is to schedule threads carefully. Assume the following characteristics of threads T1, T2, T3 and T4: • T1 (at some point) acquires and releases locks L1, L2 and L5 • T2 (at some point) acquires and releases locks L2, L3 and L4 • T3 (at some point) acquires and releases locks L1, L2 and L4 • T4 (at some point) acquires and releases locks L3, L4 and L5 For which schedules below is deadlock possible? (a) T4, T2, T3, and T1 run concurrently. (b) T1 and T2 run concurrently to completion, then T3 runs to completion, then T4 runs. (c) T1 and T3 run concurrently to completion, then T2 and T4 run concurrently to completion. O (d) T2 and T4 run concurrently to completion, then T1 runs to completion. (e) T1 and T4 run concurrently to completion, T1 finishes first after which T4 continuous to run to completion with T2. O
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