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Cisco 300-715 Practice Test 118

Question 1170

An ISE TACACS rule includes a broad permit-any-command option that bypasses intended command restrictions. The observed failure is: Broad default permit or incorrect pattern matching can allow unintended configuration changes. How should the administrator correct and verify this failure?

  1. The supported recovery is to disable TACACS command authorization after successful user login.
  2. The supported recovery is to permit all unlisted commands while claiming a strict read-only role.
  3. The supported recovery is to tighten command set rules and test both safe show commands and prohibited disruptive operations.
  4. The supported recovery is to use only a CLI banner message as enforcement of command restrictions.

Explanation

Correct Answer

C:

This restores the intended operational behavior for TACACS command set permit deny semantics. For the specific situation, an ISE TACACS rule includes a broad permit-any-command option that bypasses intended command restrictions.

Incorrect Answers

A:

Disable TACACS command authorization after successful user login. This action does not repair the identified failure. Broad default permit or incorrect pattern matching can allow unintended configuration changes. Instead, tighten command set rules and test both safe show commands and prohibited disruptive operations. For the specific situation, an ISE TACACS rule includes a broad permit-any-command option that bypasses intended command restrictions.

B:

Permit all unlisted commands while claiming a strict read-only role. This action does not repair the identified failure. Broad default permit or incorrect pattern matching can allow unintended configuration changes. Instead, tighten command set rules and test both safe show commands and prohibited disruptive operations. For the specific situation, an ISE TACACS rule includes a broad permit-any-command option that bypasses intended command restrictions.

D:

Use only a CLI banner message as enforcement of command restrictions. This action does not repair the identified failure. Broad default permit or incorrect pattern matching can allow unintended configuration changes. Instead, tighten command set rules and test both safe show commands and prohibited disruptive operations. For the specific situation, an ISE TACACS rule includes a broad permit-any-command option that bypasses intended command restrictions.

Question 1171

A technician should issue show running-config but cannot use an unrestricted write erase command. Which configuration decision most directly satisfies the requirement?

  1. Assume allowing show implicitly blocks all config commands without checking the complete set.
  2. Define and test suitable TACACS+ command and argument matching patterns with explicit denial precedence.
  3. Set permit any command not listed while relying on one narrow deny.
  4. Ignore CLI arguments and evaluate only the first token for all device tasks.

Explanation

Correct Answer

B:

Command authorization must consider the complete CLI command and its arguments, not only the leading verb. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

Incorrect Answers

A:

This does not implement the required control for TACACS command arguments and regex evaluation. Permitting a broad command prefix can authorize dangerous subcommands or arguments.

C:

Set permit any command not listed while relying on one narrow deny. This alternative overlooks a required prerequisite or targets the wrong function. Command authorization must consider the complete CLI command and its arguments, not only the leading verb. The relevant evidence is submitted command string, argument list, ISE matching rule, device command response and audit event. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

D:

Permitting a broad command prefix can authorize dangerous subcommands or arguments. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

Question 1172

A technician should issue show running-config but cannot use an unrestricted write erase command. What observations most directly test this network-access condition?

  1. A switch interface description without any live AAA request or response.
  2. An old diagram with no RADIUS, TACACS+ or endpoint-session evidence.
  3. Submitted command string, argument list, ISE matching rule, device command response and audit event.
  4. A current login screenshot from a completely unrelated ISE deployment.

Explanation

Correct Answer

C:

Command authorization must consider the complete CLI command and its arguments, not only the leading verb. These observations directly establish the result of TACACS command arguments and regex evaluation for the described endpoint or network device.

Incorrect Answers

A:

This observation cannot verify TACACS command arguments and regex evaluation. Command authorization must consider the complete CLI command and its arguments, not only the leading verb.

B:

This observation cannot verify TACACS command arguments and regex evaluation. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

D:

This observation cannot verify TACACS command arguments and regex evaluation. Check submitted command string, argument list, ISE matching rule, device command response and audit event.

Question 1173

A technician should issue show running-config but cannot use an unrestricted write erase command. What principle of ISE authentication and authorization explains this case?

  1. A captive portal page automatically changes network authorization on every active NAD session without signaling.
  2. A successful switch port link signal always proves the device identity and policy were verified.
  3. Every RADIUS Access-Accept grants unrestricted access to all applications.
  4. Command authorization must consider the complete CLI command and its arguments, not only the leading verb.

Explanation

Correct Answer

D:

The supported implementation is to define and test suitable TACACS+ command and argument matching patterns with explicit denial precedence. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

Incorrect Answers

A:

This generalization is not valid for TACACS command arguments and regex evaluation. Instead command authorization must consider the complete CLI command and its arguments, not only the leading verb.

B:

This generalization is not valid for TACACS command arguments and regex evaluation. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

C:

This generalization is not valid for TACACS command arguments and regex evaluation. Verify the actual state using submitted command string, argument list, ISE matching rule, device command response and audit event.

Question 1174

A technician should issue show running-config but cannot use an unrestricted write erase command. An operator proposes the following incorrect shortcut: Assume allowing show implicitly blocks all config commands without checking the complete set. Which negative consequence BEST explains the shortcut’s flaw?

  1. Permitting a broad command prefix can authorize dangerous subcommands or arguments.
  2. Reading the authentication event report caused the original network access outage.
  3. The only result is an unrelated portal background color change.
  4. Accurate device accounting automatically created every earlier failed EAP exchange.

Explanation

Correct Answer

A:

The shortcut is unsuitable because command authorization must consider the complete CLI command and its arguments, not only the leading verb. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

Incorrect Answers

B:

This unrelated assertion does not explain the TACACS command arguments and regex evaluation problem. The relevant risk is that permitting a broad command prefix can authorize dangerous subcommands or arguments.

C:

This unrelated assertion does not explain the TACACS command arguments and regex evaluation problem. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

D:

This unrelated assertion does not explain the TACACS command arguments and regex evaluation problem. Check submitted command string, argument list, ISE matching rule, device command response and audit event.

Question 1175

A technician should issue show running-config but cannot use an unrestricted write erase command. The observed failure is: Permitting a broad command prefix can authorize dangerous subcommands or arguments. How should the administrator correct and verify this failure?

  1. Set permit any command not listed while relying on one narrow deny.
  2. Ignore CLI arguments and evaluate only the first token for all device tasks.
  3. Assume allowing show implicitly blocks all config commands without checking the complete set.
  4. Refine pattern and test safe and destructive commands under the affected role.

Explanation

Correct Answer

D:

Command authorization must consider the complete CLI command and its arguments, not only the leading verb. This restores the intended operational behavior for TACACS command arguments and regex evaluation.

Incorrect Answers

A:

Set permit any command not listed while relying on one narrow deny. This action does not repair the identified failure. Permitting a broad command prefix can authorize dangerous subcommands or arguments. Instead, refine pattern and test safe and destructive commands under the affected role. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

B:

Ignore CLI arguments and evaluate only the first token for all device tasks. This action does not repair the identified failure. Permitting a broad command prefix can authorize dangerous subcommands or arguments. Instead, refine pattern and test safe and destructive commands under the affected role. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

C:

Assume allowing show implicitly blocks all config commands without checking the complete set. This action does not repair the identified failure. Permitting a broad command prefix can authorize dangerous subcommands or arguments. Instead, refine pattern and test safe and destructive commands under the affected role. For the specific situation, a technician should issue show running-config but cannot use an unrestricted write erase command.

Question 1176

A command authorization regex is too broad and allows destructive variants of a permitted diagnostic command. Which administrator action is appropriate for this ISE access-control problem?

  1. In this case, define and test suitable TACACS+ command and argument matching patterns with explicit denial precedence.
  2. In this case, set permit any command not listed while relying on one narrow deny.
  3. In this case, ignore CLI arguments and evaluate only the first token for all device tasks.
  4. In this case, assume allowing show implicitly blocks all config commands without checking the complete set.

Explanation

Correct Answer

A:

Command authorization must consider the complete CLI command and its arguments, not only the leading verb. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

Incorrect Answers

B:

Set permit any command not listed while relying on one narrow deny. This alternative overlooks a required prerequisite or targets the wrong function. Command authorization must consider the complete CLI command and its arguments, not only the leading verb. The relevant evidence is submitted command string, argument list, ISE matching rule, device command response and audit event. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

C:

Permitting a broad command prefix can authorize dangerous subcommands or arguments. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

D:

This does not implement the required control for TACACS command arguments and regex evaluation. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

Question 1177

A command authorization regex is too broad and allows destructive variants of a permitted diagnostic command. Which collected records establish that the ISE decision actually took effect?

  1. The supporting evidence is a successful ICMP echo that does not test the required identity-service workflow.
  2. The supporting evidence is submitted command string, argument list, ISE matching rule, device command response and audit event.
  3. The supporting evidence is a switch interface description without any live AAA request or response.
  4. The supporting evidence is an old diagram with no RADIUS, TACACS+ or endpoint-session evidence.

Explanation

Correct Answer

B:

Command authorization must consider the complete CLI command and its arguments, not only the leading verb. Submitted command string, argument list, ISE matching rule, device command response and audit event.

Incorrect Answers

A:

This observation cannot verify TACACS command arguments and regex evaluation. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

C:

This observation cannot verify TACACS command arguments and regex evaluation. A switch interface description without any live AAA request or response.

D:

This observation cannot verify TACACS command arguments and regex evaluation. An old diagram with no RADIUS, TACACS+ or endpoint-session evidence.

Question 1178

A command authorization regex is too broad and allows destructive variants of a permitted diagnostic command. Which statement about the relevant technology is correct?

  1. The governing principle is that every RADIUS Access-Accept grants unrestricted access to all applications.
  2. The governing principle is that a captive portal page automatically changes network authorization on every active NAD session without signaling.
  3. The governing principle is that a MAC address is a cryptographic proof of endpoint device ownership.
  4. The governing principle is that command authorization must consider the complete CLI command and its arguments, not only the leading verb.

Explanation

Correct Answer

D:

The supported implementation is to define and test suitable TACACS+ command and argument matching patterns with explicit denial precedence. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

Incorrect Answers

A:

This generalization is not valid for TACACS command arguments and regex evaluation. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

B:

This generalization is not valid for TACACS command arguments and regex evaluation. A captive portal page automatically changes network authorization on every active NAD session without signaling.

C:

This generalization is not valid for TACACS command arguments and regex evaluation. A MAC address is a cryptographic proof of endpoint device ownership.

Question 1179

A command authorization regex is too broad and allows destructive variants of a permitted diagnostic command. An operator proposes the following incorrect shortcut: Assume allowing show implicitly blocks all config commands without checking the complete set. What specific security or operational failure should be anticipated?

  1. The material consequence is that accurate device accounting automatically created every earlier failed EAP exchange.
  2. The material consequence is that inspecting a correct endpoint certificate generated the original directory outage.
  3. The material consequence is that the only result is an unrelated portal background color change.
  4. The material consequence is that permitting a broad command prefix can authorize dangerous subcommands or arguments.

Explanation

Correct Answer

D:

The shortcut is unsuitable because command authorization must consider the complete CLI command and its arguments, not only the leading verb. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

Incorrect Answers

A:

This unrelated assertion does not explain the TACACS command arguments and regex evaluation problem. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

B:

This unrelated assertion does not explain the TACACS command arguments and regex evaluation problem. Inspecting a correct endpoint certificate generated the original directory outage.

C:

This unrelated assertion does not explain the TACACS command arguments and regex evaluation problem. The only result is an unrelated portal background color change.

Question 1180

A command authorization regex is too broad and allows destructive variants of a permitted diagnostic command. The observed failure is: Permitting a broad command prefix can authorize dangerous subcommands or arguments. Which remediation resolves the underlying fault while maintaining policy?

  1. The supported recovery is to ignore CLI arguments and evaluate only the first token for all device tasks.
  2. The supported recovery is to assume allowing show implicitly blocks all config commands without checking the complete set.
  3. The supported recovery is to set permit any command not listed while relying on one narrow deny.
  4. The supported recovery is to refine pattern and test safe and destructive commands under the affected role.

Explanation

Correct Answer

D:

Command authorization must consider the complete CLI command and its arguments, not only the leading verb. Recheck submitted command string, argument list, ISE matching rule, device command response and audit event.

Incorrect Answers

A:

Ignore CLI arguments and evaluate only the first token for all device tasks. This action does not repair the identified failure. Permitting a broad command prefix can authorize dangerous subcommands or arguments. Instead, refine pattern and test safe and destructive commands under the affected role. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

B:

Assume allowing show implicitly blocks all config commands without checking the complete set. This action does not repair the identified failure. Permitting a broad command prefix can authorize dangerous subcommands or arguments. Instead, refine pattern and test safe and destructive commands under the affected role. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

C:

Set permit any command not listed while relying on one narrow deny. This action does not repair the identified failure. Permitting a broad command prefix can authorize dangerous subcommands or arguments. Instead, refine pattern and test safe and destructive commands under the affected role. For the specific situation, a command authorization regex is too broad and allows destructive variants of a permitted diagnostic command.

Implementing and Configuring Cisco Identity Services Engine (300-715 SISE) (300-715) Practice Tests