Net Host Services
This Windows application-layer protocol supports file and printer sharing and commonly runs on TCP port 445.
What is SMB (Server Message Block)
This commonly used port is configured on clients for non-transparent proxy servers.
What is port 8080
This is the first component you should replace when suspecting a physical connection issue.
What is the Ethernet patch cable
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What is the Ryder
This term describes software or hardware that is no longer supported by its vendor.
What is end-of-life (EOL)
This software suite allows Linux or UNIX systems to act like Windows file or print servers.
What is Samba
This security system scans outgoing traffic to prevent unauthorized transmission of confidential data.
What is Data Loss Prevention (DLP)
Improper cable termination and untwisted wire pairs commonly cause this issue.
What is crosstalk
When a wireless network name does not appear, the SSID may be hidden or the user may be this.
What is out of range
This type of server address is advertised to clients by a load balancer.
What is a virtual server
This protocol replaced SSL and provides encrypted communication for HTTPS.
What is TLS
This appliance combines firewall, IDS/IPS, antivirus, and content filtering into one system.
What is Unified Threat Management (UTM)
This measurement represents wireless signal strength and is expressed as a negative dBm value.
What is RSSI (Received Signal Strength Indicator)
Nearby power lines, motors, or fluorescent lighting can cause this network problem.
What is external interference
This system can actively block malicious packets after detection.
What is an IPS (Intrusion Prevention System)
This authentication model allows users to log in once and access multiple network services.
What is single sign-on (SSO)
This system manages large-scale, multi-site industrial operations over WAN links.
What is SCADA
This network feature prioritizes VoIP traffic over other data types.
What is Quality of Service (QoS)
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21-1
This network architecture uses servers to host shared disk and printer resources while clients access them.
What is client/server architecture
This network monitoring protocol uses agents and MIBs to track device performance.
What is SNMP?
Smart home devices often use these low-power wireless protocols instead of Wi-Fi.
What are Zigbee and Z-Wave
This command displays IP address, subnet mask, and default gateway information.
What is ipconfig /all?
These programmable devices control valves, motors, and circuit breakers in ICS environments.
What are PLCs (Programmable Logic Controllers)
This legacy Windows networking protocol stack used name resolution before DNS became standard.
What is NetBIOS
This directory protocol is used by Active Directory and supports secure queries over TCP port 636.
What is LDAP (or LDAPS)
These systems use SPF, DKIM, and DMARC to stop spoofed or malicious email before delivery.
What are spam gateways
This term refers to variations in packet delivery timing.
What is jitter
Networks used by embedded and industrial devices are commonly called this.
What is an operational technology (OT) network
MongoDB and CouchDB are examples of this flexible database type.
What is a non-relational (NoSQL) database