Page 1 of 177
BIG-IP Administration Data Plane
Configuration Practice Exam & Study Guide
latest version 8.3(F5CAB3)
Q1. A BIG-IP Administrator needs to load balance a pool of
web servers. Load balancing should consider the number of
connections that are active on that pool member. Which load
balancing method meets this requirement?
A) Ratio (node)
B) Round Robin
C) Least Connections (member)
D) Ratio (member)
Answer: C
Rationale: The requirement states that load balancing decisions
must be based on the number of active connections on each pool
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member. Least Connections (member) selects the pool member
with the fewest active connections at the time of the request. This
method dynamically adapts to real-time traffic patterns. Round
Robin distributes sequentially without considering load, and Ratio
methods use static weights rather than real-time connection
counts.
Q2. All pool members are online. All other virtual server
settings are at default. What might alter the load balancing
behavior?
A) Adding a OneConnect profile
B) Enabling SNAT automap
C) Enabling a fallback host in the HTTP profile
D) Adding a persistence profile
Answer: D
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Rationale: By default, BIG-IP load balancing algorithms distribute
connections evenly across available pool members. However,
persistence profiles override normal load balancing decisions by
forcing subsequent connections from a client to be sent to the
same pool member. Persistence creates a client-to-server
mapping that is honored before load balancing algorithms are
applied. When persistence is enabled, BIG-IP may repeatedly
select the same pool member even if others are available.
Q3. Users are unable to reach an application. The Virtual
Server shows a red diamond status. What is the cause?
A) All pool members are down
B) The virtual server is disabled
C) The virtual server address is incorrect
D) The VLAN is down
Answer: A
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Rationale: A red diamond indicates that the Virtual Server is
enabled but unavailable, typically due to all pool members
being down. A green diamond indicates available, a gray
diamond indicates disabled, and a yellow diamond indicates
degraded (some members down but at least one available).
Q4. A BIG-IP Administrator creates an HTTP Virtual Server
using an iApp template. After the Virtual Server is created, the
user requests to change the destination IP addresses. The BIG-
IP Administrator tries to change the destination IP address
from 10.1.1.1 to 10.2.1.1 in Virtual Server settings, but
receives the following error: "The application service must be
updated using an application management interface." What is
causing this error?
A) The iApp has Strict Updates enabled
B) The destination IP is already in use
BIG-IP Administration Data Plane
Configuration Practice Exam & Study Guide
latest version 8.3(F5CAB3)
Q1. A BIG-IP Administrator needs to load balance a pool of
web servers. Load balancing should consider the number of
connections that are active on that pool member. Which load
balancing method meets this requirement?
A) Ratio (node)
B) Round Robin
C) Least Connections (member)
D) Ratio (member)
Answer: C
Rationale: The requirement states that load balancing decisions
must be based on the number of active connections on each pool
,Page 2 of 177
member. Least Connections (member) selects the pool member
with the fewest active connections at the time of the request. This
method dynamically adapts to real-time traffic patterns. Round
Robin distributes sequentially without considering load, and Ratio
methods use static weights rather than real-time connection
counts.
Q2. All pool members are online. All other virtual server
settings are at default. What might alter the load balancing
behavior?
A) Adding a OneConnect profile
B) Enabling SNAT automap
C) Enabling a fallback host in the HTTP profile
D) Adding a persistence profile
Answer: D
,Page 3 of 177
Rationale: By default, BIG-IP load balancing algorithms distribute
connections evenly across available pool members. However,
persistence profiles override normal load balancing decisions by
forcing subsequent connections from a client to be sent to the
same pool member. Persistence creates a client-to-server
mapping that is honored before load balancing algorithms are
applied. When persistence is enabled, BIG-IP may repeatedly
select the same pool member even if others are available.
Q3. Users are unable to reach an application. The Virtual
Server shows a red diamond status. What is the cause?
A) All pool members are down
B) The virtual server is disabled
C) The virtual server address is incorrect
D) The VLAN is down
Answer: A
, Page 4 of 177
Rationale: A red diamond indicates that the Virtual Server is
enabled but unavailable, typically due to all pool members
being down. A green diamond indicates available, a gray
diamond indicates disabled, and a yellow diamond indicates
degraded (some members down but at least one available).
Q4. A BIG-IP Administrator creates an HTTP Virtual Server
using an iApp template. After the Virtual Server is created, the
user requests to change the destination IP addresses. The BIG-
IP Administrator tries to change the destination IP address
from 10.1.1.1 to 10.2.1.1 in Virtual Server settings, but
receives the following error: "The application service must be
updated using an application management interface." What is
causing this error?
A) The iApp has Strict Updates enabled
B) The destination IP is already in use
