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BIG-IP Administration Data Plane
Configuration Practice Exam & Study Guide
latest version 8.3(F5CAB3)
1. 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 .
2. 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
Rationale: By default, BIG-IP load balancing algorithms (such as
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Round Robin) distribute connections evenly across all 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. When persistence is
enabled, BIG-IP may repeatedly select the same pool member
even if others are available .
3. 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 administratively disabled
C) The virtual server has reached its connection limit
D) The virtual server is in a different partition
Answer: A
Rationale: A red diamond indicates that the Virtual Server is
enabled but unavailable, typically due to all pool members
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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) .
4. 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
C) The virtual server is in a different partition
D) The subnet mask is incorrect
BIG-IP Administration Data Plane
Configuration Practice Exam & Study Guide
latest version 8.3(F5CAB3)
1. 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 .
2. 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
Rationale: By default, BIG-IP load balancing algorithms (such as
,Page 3 of 106
Round Robin) distribute connections evenly across all 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. When persistence is
enabled, BIG-IP may repeatedly select the same pool member
even if others are available .
3. 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 administratively disabled
C) The virtual server has reached its connection limit
D) The virtual server is in a different partition
Answer: A
Rationale: A red diamond indicates that the Virtual Server is
enabled but unavailable, typically due to all pool members
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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) .
4. 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
C) The virtual server is in a different partition
D) The subnet mask is incorrect
