XK0-005 · Question #1611
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…
The correct answer is D. # echo 'net.core.rmem_max = 12500000' >> /etc/sysctl.conf. Network latency and application crashes are often caused by insufficient socket receive buffer sizes. Setting net.core.rmem_max increases the maximum receive buffer size for network sockets, allowing the kernel to buffer more incoming data and reducing packet drops that cause…
Question
Exhibit
Options
- A
echo 'net.core.net_backlog = 5000000' >> /etc/sysctl.conf
- B
ifdown eth0
- C
systemctl stop network
- D
echo 'net.core.rmem_max = 12500000' >> /etc/sysctl.conf
How the community answered
(32 responses)- A9% (3)
- B3% (1)
- C16% (5)
- D72% (23)
Explanation
Network latency and application crashes are often caused by insufficient socket receive buffer sizes. Setting net.core.rmem_max increases the maximum receive buffer size for network sockets, allowing the kernel to buffer more incoming data and reducing packet drops that cause latency and crashes. net.core.net_backlog (option A) controls the connection queue length, which addresses connection queuing, not latency from buffer overflow. ifdown eth0 takes the network interface offline, and systemctl stop network stops networking entirely - both would worsen the situation.
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