Question 550 A device is reachable over console but not via remote VTY after changing login policies; the team proposes reloading it immediately. Which technical mechanism best explains the behavior observed in this scenario? TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. VTY access-class policy governs which source networks may establish remote management sessions. ExplanationCorrect Answer B:Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. This explains why the initial condition produces the observed failure. The direct repair is: Use console access to inspect VTY line configuration, AAA method lists and applied ACL before a disruptive reload. Validate through: Test remote access after correction while preserving working console recovery. Other Answers A:TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. C:Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. D:VTY access-class policy governs which source networks may establish remote management sessions. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration.
Question 551 A device is reachable over console but not via remote VTY after changing login policies; the team proposes reloading it immediately. After applying the correction, which verification evidence most directly demonstrates that this issue is resolved? Capture the change from permitted Telnet to refused Telnet and successful authenticated SSH. Confirm a controlled SSH login and check VTY authentication settings without weakening access control. Test remote access after correction while preserving working console recovery. Verify successful HTTPS with expected certificate and refusal of insecure HTTP on the management interface. ExplanationCorrect Answer C:Test remote access after correction while preserving working console recovery. This checks the affected traffic or control-plane behavior, not merely a generic up/down indicator. The underlying mechanism is: Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. Other Answers A:Capture the change from permitted Telnet to refused Telnet and successful authenticated SSH. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. B:Confirm a controlled SSH login and check VTY authentication settings without weakening access control. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. D:Verify successful HTTPS with expected certificate and refusal of insecure HTTP on the management interface. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration.
Question 552 A device is reachable over console but not via remote VTY after changing login policies; the team proposes reloading it immediately. Which lasting design or operational safeguard best prevents this particular issue from recurring? Add SCP service checks to configuration-backup automation acceptance. Include secure management protocol activation and certificate lifecycle in router hardening templates. Classify management-file transfers and default to encrypted protocols in automation templates. Keep out-of-band console access and remote-access rollback tests for all AAA changes. ExplanationCorrect Answer D:Keep out-of-band console access and remote-access rollback tests for all AAA changes. This addresses the recurring cause: Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. A targeted acceptance check is: Test remote access after correction while preserving working console recovery. Other Answers A:Add SCP service checks to configuration-backup automation acceptance. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. B:Include secure management protocol activation and certificate lifecycle in router hardening templates. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration. C:Classify management-file transfers and default to encrypted protocols in automation templates. Console and VTY line settings are separate management entry points, so local console success does not prove remote line configuration.
Question 553 A TFTP configuration backup silently fails over a routed path while ICMP ping succeeds; an ACL blocks UDP file transfers. Which corrective action most directly resolves the documented failure without suppressing unrelated safeguards? Permit only the necessary TFTP transport flow between the approved endpoints or use a secure alternative. Migrate backup automation to an approved encrypted transfer such as SCP with restricted credentials. Verify SCP server capability and enable the supported SCP service with the required authentication/authorization. Enable supported SSHv2 and restrict VTY transport to SSH after confirming key and authentication readiness. ExplanationCorrect Answer A:Permit only the necessary TFTP transport flow between the approved endpoints or use a secure alternative. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. Capture a complete file transfer with appropriate transport counters or transition to a verified SCP backup. Other Answers B:Migrate backup automation to an approved encrypted transfer such as SCP with restricted credentials. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. C:Verify SCP server capability and enable the supported SCP service with the required authentication/authorization. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. D:Enable supported SSHv2 and restrict VTY transport to SSH after confirming key and authentication readiness. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session.
Question 554 A TFTP configuration backup silently fails over a routed path while ICMP ping succeeds; an ACL blocks UDP file transfers. Which technical mechanism best explains the behavior observed in this scenario? Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. SCP rides over SSH but its server-side file-transfer capability can require distinct feature activation and privilege. Telnet carries management credentials and session traffic without SSH's encryption and integrity protection. ExplanationCorrect Answer B:TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. This explains why the initial condition produces the observed failure. The direct repair is: Permit only the necessary TFTP transport flow between the approved endpoints or use a secure alternative. Validate through: Capture a complete file transfer with appropriate transport counters or transition to a verified SCP backup. Other Answers A:Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. C:SCP rides over SSH but its server-side file-transfer capability can require distinct feature activation and privilege. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. D:Telnet carries management credentials and session traffic without SSH's encryption and integrity protection. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session.
Question 555 A TFTP configuration backup silently fails over a routed path while ICMP ping succeeds; an ACL blocks UDP file transfers. After applying the correction, which verification evidence most directly demonstrates that this issue is resolved? Confirm a controlled SSH login and check VTY authentication settings without weakening access control. Verify a complete backup over the encrypted transport and review captured packets for exposed credentials. Capture a complete file transfer with appropriate transport counters or transition to a verified SCP backup. Confirm permitted jump-host access and denied test connections from a user subnet. ExplanationCorrect Answer C:Capture a complete file transfer with appropriate transport counters or transition to a verified SCP backup. This checks the affected traffic or control-plane behavior, not merely a generic up/down indicator. The underlying mechanism is: TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. Other Answers A:Confirm a controlled SSH login and check VTY authentication settings without weakening access control. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. B:Verify a complete backup over the encrypted transport and review captured packets for exposed credentials. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. D:Confirm permitted jump-host access and denied test connections from a user subnet. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session.
Question 556 A TFTP configuration backup silently fails over a routed path while ICMP ping succeeds; an ACL blocks UDP file transfers. Which lasting design or operational safeguard best prevents this particular issue from recurring? Classify management-file transfers and default to encrypted protocols in automation templates. Ban insecure VTY transports and audit remote-access protocol settings regularly. Maintain a controlled management-source allowlist and test it on new devices. Standardize secured backup transport and include actual transfer tests rather than ping-only checks. ExplanationCorrect Answer D:Standardize secured backup transport and include actual transfer tests rather than ping-only checks. This addresses the recurring cause: TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. A targeted acceptance check is: Capture a complete file transfer with appropriate transport counters or transition to a verified SCP backup. Other Answers A:Classify management-file transfers and default to encrypted protocols in automation templates. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. B:Ban insecure VTY transports and audit remote-access protocol settings regularly. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session. C:Maintain a controlled management-source allowlist and test it on new devices. TFTP uses UDP exchanges and data ports that do not behave like a single persistent TCP session.
Question 557 A router's FTP backup script stores configuration files in cleartext on an untrusted transit network, conflicting with an encryption requirement. Which corrective action most directly resolves the documented failure without suppressing unrelated safeguards? Migrate backup automation to an approved encrypted transfer such as SCP with restricted credentials. Apply a narrowly scoped management access class or control policy to VTY connections. Enable supported SSHv2 and restrict VTY transport to SSH after confirming key and authentication readiness. Use console access to inspect VTY line configuration, AAA method lists and applied ACL before a disruptive reload. ExplanationCorrect Answer A:Migrate backup automation to an approved encrypted transfer such as SCP with restricted credentials. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. Verify a complete backup over the encrypted transport and review captured packets for exposed credentials. Other Answers B:Apply a narrowly scoped management access class or control policy to VTY connections. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. C:Enable supported SSHv2 and restrict VTY transport to SSH after confirming key and authentication readiness. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. D:Use console access to inspect VTY line configuration, AAA method lists and applied ACL before a disruptive reload. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant.
Question 558 A router's FTP backup script stores configuration files in cleartext on an untrusted transit network, conflicting with an encryption requirement. Which technical mechanism best explains the behavior observed in this scenario? A certificate alone does not necessarily activate the secure HTTP management listener or disable plaintext HTTP. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. VTY `login local` authenticates against the device's local account database; network reachability alone is insufficient. VTY access-class policy governs which source networks may establish remote management sessions. ExplanationCorrect Answer B:Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. This explains why the initial condition produces the observed failure. The direct repair is: Migrate backup automation to an approved encrypted transfer such as SCP with restricted credentials. Validate through: Verify a complete backup over the encrypted transport and review captured packets for exposed credentials. Other Answers A:A certificate alone does not necessarily activate the secure HTTP management listener or disable plaintext HTTP. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. C:VTY `login local` authenticates against the device's local account database; network reachability alone is insufficient. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. D:VTY access-class policy governs which source networks may establish remote management sessions. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant.
Question 559 A router's FTP backup script stores configuration files in cleartext on an untrusted transit network, conflicting with an encryption requirement. After applying the correction, which verification evidence most directly demonstrates that this issue is resolved? Confirm a controlled SSH login and check VTY authentication settings without weakening access control. Capture the change from permitted Telnet to refused Telnet and successful authenticated SSH. Verify a complete backup over the encrypted transport and review captured packets for exposed credentials. Capture a complete file transfer with appropriate transport counters or transition to a verified SCP backup. ExplanationCorrect Answer C:Verify a complete backup over the encrypted transport and review captured packets for exposed credentials. This checks the affected traffic or control-plane behavior, not merely a generic up/down indicator. The underlying mechanism is: Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. Other Answers A:Confirm a controlled SSH login and check VTY authentication settings without weakening access control. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. B:Capture the change from permitted Telnet to refused Telnet and successful authenticated SSH. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. D:Capture a complete file transfer with appropriate transport counters or transition to a verified SCP backup. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant.
Question 560 A router's FTP backup script stores configuration files in cleartext on an untrusted transit network, conflicting with an encryption requirement. Which lasting design or operational safeguard best prevents this particular issue from recurring? Include secure management protocol activation and certificate lifecycle in router hardening templates. Add SCP service checks to configuration-backup automation acceptance. Ban insecure VTY transports and audit remote-access protocol settings regularly. Classify management-file transfers and default to encrypted protocols in automation templates. ExplanationCorrect Answer D:Classify management-file transfers and default to encrypted protocols in automation templates. This addresses the recurring cause: Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. A targeted acceptance check is: Verify a complete backup over the encrypted transport and review captured packets for exposed credentials. Other Answers A:Include secure management protocol activation and certificate lifecycle in router hardening templates. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. B:Add SCP service checks to configuration-backup automation acceptance. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant. C:Ban insecure VTY transports and audit remote-access protocol settings regularly. Traditional FTP exposes control credentials and file contents unless specifically protected by a secure variant.
