Exam XK0-005 topic 1 question 232 discussion

Actual exam question from CompTIA's XK0-005

Question #: 232
Topic #: 1

The application team has reported latency issues that are causing the application to crash on the Linux server. The Linux administrator starts troubleshooting and receives the following output:

Which of the following commands will improve the latency issue?

A. # echo 'net.core.net_backlog = 5000000' >> /etc/sysctl.conf
# sysctl -p
# systemctl daemon-reload
B. # ifdown eth0
# ip link set dev eth0 mtu 800
# ifup eth0
C. # systemctl stop network
# ethtool -g eth0 512
# systemctl start network
D. # echo 'net.core.rmem_max = 12500000' >> /etc/sysctl.conf
# echo 'net.core.wmem_max = 12500000' >> /etc/sysctl.conf
# sysctl -p

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Suggested Answer: D 🗳️

by makuziker at Feb. 19, 2024, 8:07 p.m.

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makuziker

8 months, 4 weeks ago

Selected Answer: D

A: net.core.net_backlog does not exist AFAIK. There is a similar config called net.core.netdev_max_backlog. That one determines how many incoming packets can wait in queue on your network interface. D: net.core.rmem_max configures how much data your network interface can receive (or read), kind of like the allowed size of your mailbox. net.core.wmem_max configures the same for your "outbox" size. "sysctl -p" will load your new configuration from /etc/sysctl.conf.

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Exam XK0-005 topic 1 question 232 discussion

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makuziker

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