170-010 · Question #65
Which show command displays the most recent entries in the local device log?
The correct answer is A. show log tail. See the full explanation below for the reasoning.
Question
Which show command displays the most recent entries in the local device log?
Options
- Ashow log tail
- Bshow log end
- Cshow log -10
- Dshow log | grep <today's date>
How the community answered
(28 responses)- A71% (20)
- B7% (2)
- C4% (1)
- D18% (5)
Community Discussion
7
Toby R.May 12, 2026The answer is A, show log tail. On Junos, the "tail" keyword pulls the most recent lines from a syslog file, same concept as running tail on a Unix log file from the command line. The other options look plausible if you are guessing from Linux intuition, but "show log end" and "show log -10" are not valid Junos syntax, and piping to grep with a date works but it filters by date rather than specifically targeting the most recent entries the way tail does. On the real exam they tested this exact command so just burn it into memory: show log tail, and if they give you a filename it becomes show log messages tail or whatever the log file is called.
Ola B.May 12, 2026Solid breakdown, and worth adding that you can follow tail with a line count like "show log messages tail 20" to grab exactly how many recent lines you want instead of the default 10.
Ola B.May 21, 2026"show log tail" pulls the bottom of the log buffer, right, so have you tried it in a lab to see the output yourself?
Carlos M.Jun 13, 2026A, show log tail. Saw something almost exactly like this on my practice run last week and almost talked myself into D because it felt more "Linux-y," but tail is the right instinct here since it pulls the most recent entries just like it does in any log context.
Lena V.May 3, 2026"show log tail" is right, it prints the most recent log entries by default.
Bartosz H.Jun 6, 2026"show log tail" pulls the last screenful, not a fixed count, right?
Ola B.Jun 8, 2026Mostly right, but the actual count depends on your terminal height at the time of the call, so spin up a lab, resize your window, and run it a few times to see how that shifts the output.