LPIC-2 Network Client Management Practice Question
Exhibit
Refer to the exhibit. server:/export/data on /mnt/data type nfs4 (rw,noatime,vers=4.2,rsize=1048576,wsize=1048576,hard,sec=sys)
Given the mount options shown, which of the following events will cause the NFS mount to become unresponsive (hang)?
⚠ Common exam trap
LPI often tests the misconception that network saturation or local disk issues cause NFS hangs, but the key is that only a hard mount with a server reboot (or network partition that breaks the connection) leads to an indefinite hang, while other issues result in errors or retries without freezing the client.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The NFS server reboots.
When the NFS server reboots, the client's TCP connection to the server is broken. With the `hard` mount option (default), the client will retry indefinitely until the server comes back online, causing all processes accessing the mount to hang (become unresponsive). The `intr` option (if not set) prevents interruption by signals, making the hang persistent until the server responds.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The NFS server reboots.
Why this is correct
With 'hard' mount, the client will continuously retry, causing a hang until the server responds.
- ✗
The network becomes saturated.
Why it's wrong here
Saturation may slow performance but does not cause a complete hang.
- ✗
The client runs out of disk space on /mnt/data.
Why it's wrong here
This affects write operations but does not cause the mount to hang.
- ✗
The /mnt/data directory is deleted locally.
Why it's wrong here
The mount point exists; the directory deletion would only affect access to files.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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