Quiz: what a server exposes

Question 9 of 10

Read the output

Last night only the libexpat1 package — the XML parsing library — was upgraded. Why did needrestart name these services?

$ sudo needrestart -b
NEEDRESTART-VER: 3.6
NEEDRESTART-KCUR: 6.8.0-124-generic
NEEDRESTART-KEXP: 6.8.0-124-generic
NEEDRESTART-KSTA: 1
NEEDRESTART-SVC: dbus.service
NEEDRESTART-SVC: lab-report.service
NEEDRESTART-SVC: polkit.service

Their packages were upgraded together with libexpat1 as dependencies.
needrestart lists every service that listens on ports.
Their processes mapped the library into memory and hold its deleted file.

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