f5 201 Exam Questions

Questions for the 201 were updated on : Nov 21 ,2025

Page 1 out of 17. Viewing questions 1-15 out of 254

Question 1

When network failover is enabled, which of the following is true?

  • A. The failover cable status is ignored. Failover is determined by the network status only.
  • B. Either a network failure or loss of voltage across the failover cable will cause a failover.
  • C. A network failure will not cause a failover as long as there is a voltage across the failover cable.
  • D. The presence or absence of voltage over the fail over cable takes precedence over network failover.
Answer:

C

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Question 2

As a part of the Setup Utility, the administrator sets the host name for the BIG IP. What would be the
result if the two systems in a redundant pair were set to the same host name?

  • A. Host names do not matter in redundant pair communication.
  • B. In a redundant pair, the two systems will always have the same host name. The parameter is synchronized between the systems.
  • C. The first time the systems are synchronized the receiving system will be assigned the same self-IP addresses as the source system.
  • D. When the administrator attempts to access the configuration utility using the host name, they will always connect to the active system.
Answer:

C

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Question 3

Which two methods can be used to determine which BIG-IP is currently active? (Choose two.)

  • A. The bigtop command displays the status.
  • B. Only the active system's configuration screens are active.
  • C. The status (Active/Standby) is embedded in the command prompt.
  • D. The ifconfig a command displays the floating addresses on the active system.
Answer:

A, C

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Question 4

Which two statements are true concerning the default communication between a redundant pair of
BIG-IP systems? (Choose two.)

  • A. Synchronization occurs via a TCP connection using ports 683 and 684.
  • B. Connection mirroring data is shared via a TCP connection using port 1028.
  • C. Persistence mirroring data is shared via a TCP connection using port 1028.
  • D. Connection mirroring data is shared through the serial fail over cable unless network failover is enabled.
Answer:

B, C

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Question 5

Which parameters are set to the same value when a pair of BIG-IP devices are synchronized?

  • A. host names
  • B. system clocks
  • C. profile definitions
  • D. VLAN failsafe settings
  • E. MAC masquerade addresses
Answer:

C

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Question 6

What is the purpose of floating self-IP addresses?

  • A. to define an address that grants administrative access to either system at any time
  • B. to define an address that allows either system to initiate communication at any time
  • C. to define an address that allows network devices to route traffic via a single IP address
  • D. to define an address that gives network devices greater flexibility in choosing a path to forward traffic
Answer:

C

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Question 7

Which statement is true concerning a functional iRule?

  • A. iRules use a proprietary syntax language.
  • B. iRules must contain at least one event declaration.
  • C. iRules must contain at least one conditional statement.
  • D. iRules must contain at least one pool assignment statement.
Answer:

B

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Question 8

A virtual server is listening at 10.10.1.100:any and has the following iRule associated with it:
when CLIENT_ACCEPTED { if {[TCP::local_port] equals 21 } { pool
ftppool } elseif {[TCP::local_port] equals 23 } { pool telnetpool }
If a user connects to 10.10.1.100 and port 22, which pool will receive the request?

  • A. ftppool
  • B. telnetpool
  • C. None. The request will be dropped.
  • D. Unknown. The pool cannot be determined from the information provided.
Answer:

D

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Question 9

A virtual server is listening at 10.10.1.100:80 and has the following iRule associated with it:
when HTTP_REQUEST { if { [HTTP::header UserAgent] contains "MSIE" }
{ pool MSIE_pool }
else { pool Mozilla_pool }
If a user connects to
http://10.10.1.100/foo.html
and their browser does not specify a UserAgent,
which pool will receive the request?

  • A. MSIE_pool
  • B. Mozilla_pool
  • C. None. The request will be dropped.
  • D. Unknown. The pool cannot be determined from the information provided.
Answer:

B

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Question 10

Which statement describes a typical purpose of iRules?

  • A. iRules can be used to add individual control characters to an HTTP data stream.
  • B. iRules can be used to update the timers on monitors as a server load changes.
  • C. iRules can examine a server response and remove it from a pool if the response is unexpected.
  • D. iRules can be used to look at client requests and server responses to choose a pool member to select for load balancing
Answer:

A

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Question 11

Which two statements are true about NATs? (Choose two.)

  • A. NATs support UDP, TCP, and ICMP traffic.
  • B. NATs can be configured with mirroring enabled or disabled.
  • C. NATs provide a one-to-one mapping between IP addresses.
  • D. NATs provide a many-to-one mapping between IP addresses.
Answer:

A, C

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Question 12

Which statement is true concerning SNATs using automap?

  • A. Only specified self-IP addresses are used as automap addresses.
  • B. SNATs using automap will translate all client addresses to an automap address.
  • C. A SNAT using automap will preferentially use a floating self-IP over a nonfloating self-IP.
  • D. A SNAT using automap can be used to translate the source address of all outgoing traffic to the same address regardless of which VLAN the traffic is sent through.
Answer:

C

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Question 13

A BIG-IP has two load balancing virtual servers at 150.150.10.10:80 and 150.150.10.10:443. The port
80 virtual server has SNAT automap configured. There is also a SNAT configured at 150.150.10.11 set
for
a
source
address range of 200.200.1.0 / 255.255.255.0. All other settings are at their default states. If a client
with the IP address 200.200.1.1 sends a request to
https://150.150.10.10
,
What is the source IP address when the associated packet is sent to the pool member?

  • A. 200.200.1.1
  • B. 150.150.10.11
  • C. Floating self IP address on VLAN where the packet leaves the system
  • D. Floating self IP address on VLAN where the packet arrives on the system
Answer:

B

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Question 14

Which two statements are true about SNATs? (Choose two.)

  • A. SNATs are enabled on all VLANs, by default.
  • B. SNATs can be configured within a Profile definition.
  • C. SNATs can be configured within a Virtual Server definition.
  • D. SNAT's are enabled only on the VLAN where origin traffic arrives, by default.
Answer:

A, C

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Question 15

Assume a client's traffic is being processed only by a NAT; no SNAT or virtual server processing takes
place. Also assume that the NAT definition specifies a NAT address and an origin address while all
other
settings
are
left at their defaults. If the origin server were to initiate traffic via the BIG-IP,
What changes, if any, would take place when the BIG-IP processes such packets?

  • A. The BIG-IP would drop the request since the traffic didn’t arrive destined to the NAT address.
  • B. The source address would not change, but the destination address would be changed to the NAT address.
  • C. The source address would be changed to the NAT address and destination address would be left unchanged.
  • D. The source address would not change, but the destination address would be changed to a self-IP of the BIG-IP.
Answer:

C

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