F5 Networks F5CAB1 Exam - Topic 4 Question 1 Discussion

Actual exam question for F5 Networks's F5CAB1 exam

Question #: 1
Topic #: 4

The BIG-IP Administrator uses Secure Copy Protocol (SCP) to upload a TMOS image to the /shared/images/ directory in preparation for a TMOS upgrade.

After the upload is completed, what will the system do before the image is shown in the GUI under:

System Software Management Image List?

AThe system performs a reboot into a new partition

BThe system verifies the internal checksum

CThe system copies the image to /var/local/images/

Show Suggested Answer

Suggested Answer: B

When a TMOS image (.iso file) is uploaded into the /shared/images/ directory, the BIG-IP performs an internal validation step before the ISO appears in the GUI.

1. The system verifies the internal checksum

BIG-IP automatically reads the embedded checksum inside the ISO file

Verifies integrity of the uploaded image

Confirms the file is not corrupted or incomplete

Ensures the image is a valid F5 TMOS software image

Only after this checksum verification succeeds does the image appear under:

System Software Management Image List

Why the other options are incorrect:

A . The system performs a reboot into a new partition

Uploading an ISO file never triggers a reboot.

C . The system copies the image to /var/local/images/

All valid TMOS images remain in /shared/images/.

No copying occurs.

by Serita at Nov 24, 2025, 10:50 PM

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Lennie

1 day ago

I thought it would just reboot right away.

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Virgilio

6 days ago

Totally agree, it's all about integrity checks!

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Vivienne

12 days ago

The system verifies the internal checksum.

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Stephanie

17 days ago

B) The system verifies the internal checksum. Can't have any corrupted images, that would be a disaster!

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Talia

22 days ago

C) The system copies the image to /var/local/images/. Seems like a reasonable intermediate step.

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Ashlee

27 days ago

A) The system performs a reboot into a new partition. Gotta make sure the new image is ready to go!

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Annamae

1 month ago

B) The system verifies the internal checksum. That's the logical step before the image is ready for use.

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Loren

1 month ago

I could be wrong, but I thought the system needed to check the image's integrity before anything else. That sounds like option B to me.

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Lenna

1 month ago

I remember discussing the reboot process, but I don't think that happens right away. It seems like the verification step is crucial first.

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Kina

2 months ago

I'm not entirely sure, but I feel like the image might get copied to /var/local/images/ first. I think I saw a similar question about file paths in our practice exams.

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Staci

2 months ago

Hmm, I'm a bit unsure about this one. I'll need to review my notes on TMOS image management to make sure I'm on the right track.

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Misty

2 months ago

Alright, I'm going to read through the options and try to visualize the process. Gotta make sure I don't miss any important details.

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Ozell

2 months ago

Ah, I see. The question is asking about what happens before the image shows up in the GUI, not the actual upload process.

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Ben

3 months ago

I think the system verifies the internal checksum before it shows the image in the GUI. I remember something about checksums being important for integrity.

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