A technician is troubleshooting reports that a networked printer is unavailable. The printer's IP address is configured with a DHCP reservation, but the address cannot be pinged from the print server in the same subnet. Which of the following is MOST likely the cause of me connectivity failure?

• A.DHCP scope exhaustion
• B.Incorrect gateway
• C.DNS failure
• D.Incorrect VLAN

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A fiber link connecting two campus networks is broken. Which of the following tools should an engineer use to detect the exact break point of the fiber link?

• A.OTDR
• B.Fusion splicer
• C.Tone generator
• D.Cable tester
• E.PoE injector

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Which of the following is MOST likely to generate significant East-West traffic in a datacenter?

• A.A duplication of a hosted virtual server to another physical server for redundancy
• B.A query from an IoT device to a cloud-hosted server for a firmware update
• C.A download of navigation data to a portable device for offline access
• D.A backup of a large video presentation to cloud storage for archival purposes

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Which of the following ports is commonly used by VoIP phones?

• A.5060
• B.20
• C.445
• D.143

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Within the realm of network security, Zero Trust:

• A.block malicious software that is too new to be found in virus definitions.
• B.stops infected files from being downloaded via websites.
• C.prevents attackers from moving laterally through a system.
• D.allows a server to communicate with outside networks without a firewall.

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