Discuss F5 Networks 303 Exam Topic 1 Question 19

What does the following iRule do?

when CLIENT_ACCEPTED {

if { [matchclass [IP::client_addr] equals WebClient1-Whitelist1] }{

#log local0. "Valid client IP: [IP::client_addr] - forwarding traffic"

#Pool WebClient1

} else {

log local0. "Invalid client IP: [IP::client_addr] - discarding"

discard

}

AThe iRule compares a client IP to a list. If the client IP is on the list, discard and log the discard.

BThe iRule compares a client IP to a list. If the client IP is NOT on the list, discard and log the discard.

CThe iRule compares a client IP to a list. If the client IP is on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.

DThe iRule compares a client IP to a list. If the client IP is NOT on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.

Suggested Answer: B

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31 comments · newest first

Linn 10 months ago

Seems straightforward, but what if the list is empty?

Farrah 10 months ago

Wait, I thought it discarded valid IPs?

Hoa 10 months ago

Totally agree, it forwards valid clients to the pool!

Margo 11 months ago

Nope, it discards invalid IPs, not valid ones.

Anissa 11 months ago

The iRule checks if the client IP is in a whitelist.

Alonso 11 months ago

I keep mixing up the logic in these questions. I thought it was about discarding invalid IPs, but I can't remember if it forwards valid ones or not.

Jerilyn 12 months ago

From what I practiced, I believe it sends valid clients to a specific pool and discards the rest. That sounds like option C, right?

Breana 12 months ago

I'm not entirely sure, but I feel like it discards traffic if the IP isn't on the list. The logging part seems important too.

Albina 12 months ago

I think the iRule checks if the client IP is in a whitelist and forwards traffic if it is. I remember similar questions about IP filtering.

Wilbert 1 year ago

This is a good example of how important it is to read the question and the code carefully. I'd recommend taking a minute to really understand what the iRule is doing before jumping to an answer. Rushing through these types of questions can lead to silly mistakes.

Jesus 1 year ago

Okay, I think I've got it. The iRule is checking if the client IP is in the "WebClient1-Whitelist1" class. If it is, it's forwarding the traffic to the "WebClient1" pool. If it's not, it's discarding the connection and logging it. Option C seems to be the correct answer.

Glenn 1 year ago

Hmm, I'm a little confused about the logic here. Is it supposed to be discarding the connection if the IP is on the list, or if it's not on the list? The wording in the options is a bit ambiguous.

Viva 1 year ago

This iRule looks pretty straightforward. It's checking the client IP address against a whitelist, and if it's on the list, it's forwarding the traffic to a pool. Otherwise, it's discarding the connection and logging it.

Cecily 1 year ago

I'm not sure, but I think the iRule discards the client if their IP is not on the list.

Izetta 1 year ago

This iRule is like a bouncer at a club, checking IDs and only letting in the cool kids. I hope the correct answer isn't 'send them to the back of the line' - that would be a real bummer.

Alecia 10 months ago

↳ replying to Izetta

Yeah, no one wants to be sent to the back of the line!

Ciara 10 months ago

↳ replying to Izetta

Definitely! Only the approved IPs get in.

Eugene 10 months ago

↳ replying to Izetta

Sounds like it's all about checking the guest list!

Clay 11 months ago

↳ replying to Izetta

So, it's option C then? That makes sense!

Sharen 1 year ago

This iRule is so complicated, it's making my head spin. Is this what they call 'advanced networking'? I'll just go with the answer that sounds the most technical - option C.

Scarlet 1 year ago

I agree with Cheryl. It seems like option C is the correct answer.

Lauryn 1 year ago

Wait, what? This iRule is supposed to log a message if the client IP is invalid, but then it also discards the connection. Seems a bit overkill, no? I'd go with option B.

Cheryl 1 year ago

I think the iRule sends the client to Pool WebClient1 if their IP is on the list.

Francoise 1 year ago

Hmm, I think the question is trying to trick us. It says the iRule 'discards' the connection, but option C says it sends the client to Pool WebClient1. I'm going with option C.

Novella 1 year ago

This iRule checks the client IP against a whitelist. If the IP is on the list, it forwards the traffic to Pool WebClient1. Otherwise, it discards the connection and logs the event. Seems pretty straightforward to me.

Son 1 year ago

↳ replying to Novella

This iRule checks the client IP against a whitelist. If the IP is on the list, it forwards the traffic to Pool WebClient1. Otherwise, it discards the connection and logs the event.

Lonna 1 year ago

↳ replying to Novella

C) The iRule compares a client IP to a list. If the client IP is on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.

Zita 1 year ago

↳ replying to Novella

A) The iRule compares a client IP to a list. If the client IP is on the list, discard and log the discard.

Edward 1 year ago

↳ replying to Novella

User3: This iRule checks the client IP against a whitelist. If the IP is on the list, it forwards the traffic to Pool WebClient1. Otherwise, it discards the connection and logs the event. Seems pretty straightforward to me.

Christiane 1 year ago

↳ replying to Novella

User2: C) The iRule compares a client IP to a list. If the client IP is on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.

Alyce 1 year ago

↳ replying to Novella

User1: So, what does this iRule do?

F5 Networks 303 Exam - Topic 1 Question 19 Discussion