F5CAB2 Verified Answers - 2026 First-grade F5 F5CAB2 Valid Test Materials

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F5 F5CAB2 Exam Syllabus Topics:

TopicDetails
Topic 1
  • their status
  • statistics: This domain covers BIG-IP networking components including interfaces, trunks, VLANs, self-IPs, and routes, their dependencies and status, plus predicting traffic paths and egress IPs.
Topic 2
  • Explain high availability (HA) concepts: This domain addresses HA concepts including integrity methods, implementation approaches, and advantages of high availability configurations.
Topic 3
  • Define ADC application objects: This domain covers ADC basics including application objects, load balancing methods, server selection, and key ADC features and benefits.
Topic 4
  • Identify the different virtual server types: This domain covers BIG-IP virtual server types: Standard, Forwarding, Stateless, Reject, Performance Layer 4, and Performance HTTP.

>> F5CAB2 Verified Answers <<

100% Pass 2026 F5 Useful F5CAB2: BIG-IP Administration Data Plane Concepts (F5CAB2) Verified Answers

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F5 BIG-IP Administration Data Plane Concepts (F5CAB2) Sample Questions (Q56-Q61):

NEW QUESTION # 56
When using the setup utility to configure a redundant pair, you are asked to provide a "Failover Peer IP". Which address is this?

Answer: C


NEW QUESTION # 57
The BIG-IP Administrator wants to provide quick failover between the F5 LTM devices that are configured as an HA pair with a single Self IP using the MAC Masquerade feature. The administrator configures MAC masquerade for traffic-group-1 using the following command:
`tmsh modify /cm traffic-group traffic-group-1 mac 02:12:34:56:00:00`
However, the Network Operations team identifies an issue with using the same MAC address across multiple VLANs. As a result, the administrator enables Per-VLAN MAC Masquerade to ensure a unique MAC address per VLAN by running:
`tmsh modify /sys db tm.macmasqaddr_per_vlan value true`
What would be the resulting MAC address on a tagged VLAN with ID 1501? (Choose one answer)

Answer: B


NEW QUESTION # 58
The diagram below shows the TCP connection setup for an application.

Which of the following virtual server types applies? (Choose one answer)

Answer: C

Explanation:
The diagram illustrates a specific TCP handshake sequence where the BIG-IP system acts as a transparent forwarder rather than a full proxy. The key indicators that identify this as aForwarding (IP) virtual server are as follows:
* Initial Packet Processing: The diagram explicitly states that the LTM evaluates the packet lookingonly at the destination IP address. This is the fundamental characteristic of a Forwarding IP virtual server, which uses the system's routing table to make forwarding decisions instead of load balancing to a pool of members.
* Handshake Sequence: Unlike aStandardvirtual server, which completes the three-way handshake with the client (SYN, SYN-ACK, ACK)beforeinitiating a separate connection to the server, the Forwarding IP virtual server passes the client's originalSYNpacket directly to the destination node.
* Response Timing: The BIG-IP system waits for theSYN-ACKfrom the destination node before it sends a SYN-ACK back to the client. It essentially "passes through" the handshake signals while still maintaining a state entry in the connection table to track the flow.
* Packet-by-Packet Logic: While it tracks the state, it does not perform address translation (unless SNAT is specifically configured) or deep packet inspection like a full proxy would.
Why other options are incorrect:
* Standard virtual server: A Standard virtual server is a "full proxy." It would finish the handshake with the client first and only then open a second, independent TCP connection to the backend server.
* Stateless virtual server: A stateless virtual server does not track connections in the connection table.
The diagram shows the system meticulously passing sequence numbers ($seq_num$) and acknowledgment numbers ($ack_num$) between the two sides, which requires stateful tracking of the TCP flow.


NEW QUESTION # 59
Which statement is true concerning the default communication between a redundant pair of BIG-IP devices?

Answer: B

Explanation:
Redundant BIG-IP systems (HA pairs) must maintain constant communication to monitor the health of the peer and synchr15onize states.16
* Heartbeats: By default, even with a serial cable, th17e BIG-IP systems exchange "heartbeat" packets over the network to determine if the peer is still alive.
* Network Failover: This involves the exchange of UDP packets (typically on port 1026) at regular intervals.
* Device Service Clustering (DSC): Modern BIG-IP versions use the Central Management (cm) infrastructure to communicate configuration status and sync status constantly.
* Clarification on others: Port lockdown does affect HA communication if misconfigured (A is false).
Mirroring uses separate channels (B is false). Mirroring is never sent over the serial cable because it requires high bandwidth (D is false).


NEW QUESTION # 60
A standard virtual server has been associated with a pool with multiple members. Assuming all other settings are left at their defaults, which statement is always true concerning traffic processed by the virtual server?

Answer: D

Explanation:
Understanding the default behavior of a Standard Virtual Server regarding address and port translation is fundamental to BIG-IP administration.
* Source Address Translation (SNAT): By default, the BIG-IP system does not perform Source Address Translation (SNAT). This means that the packet's source IP address (the Client IP) remains preserved as it passes through the BIG-IP to the pool member. This is critical for backend servers to identify the original client for logging and security purposes. Therefore, the client IP address is unchanged between the client-side and server-side connections.
* Destination Address Translation (DAT): By default, a Standard Virtual Server always performs Destination Address Translation. The BIG-IP system changes the destination IP from the Virtual Server's IP address to the IP address of the specific Pool Member selected by the load balancing algorithm. Consequently, the server-side destination IP is different from the client-side destination IP.
* Port Translation: By default, Port Translation is enabled. If a Virtual Server is listening on port 80 and the selected pool member is configured for port 8080, the BIG-IP will translate the destination port.
Even if the ports happen to be the same, the setting allows for change, whereas the default SNAT setting (None) ensures the client IP remains static.


NEW QUESTION # 61
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