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@luckylittle
luckylittle / Mock Exam 1.md
Last active June 20, 2024 06:12
Prometheus Certified Associate (PCA)

Mock Exam

1

Q1. The metric node_cpu_temp_celcius reports the current temperature of a nodes CPU in celsius. What query will return the average temperature across all CPUs on a per node basis? The query should return {instance=“node1”} 23.5 //average temp across all CPUs on node1 {instance=“node2”} 33.5 //average temp across all CPUs on node2.

node_cpu_temp_celsius{instance="node1", cpu="0"} 28
node_cpu_temp_celsius{instance="node1", cpu="1"} 19
node_cpu_temp_celsius{instance="node2", cpu="0"} 36
node_cpu_temp_celsius{instance="node2", cpu="1"} 31
@valdecircarvalho
valdecircarvalho / oracle-cloud-certifications-link-o-rama.md
Last active November 25, 2022 00:35
Oracle Cloud Certifications - Link-O-Rama
@lewisrodgers
lewisrodgers / gcp-exam-resources.md
Created January 19, 2018 20:53
Google Cloud Platform exam resources

Google Cloud Platform certification exam resources

A collection of case studies, white papers, articles, books, and other resources to help prepare you for a Google Cloud Platform certification or two.

If you interested in a particular topic, a good place to start is the Tutorials and Solutions section of cloud.google.com. Search by keyword or browse around. Otherwise, I've currated some of the articles I think would be helpful and added t

@jboner
jboner / latency.txt
Last active July 17, 2024 03:12
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD