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Questions and Answers
What is the primary purpose of infrastructure application layer services?
What is the primary purpose of infrastructure application layer services?
- To enable communication between devices for troubleshooting and feedback (correct)
- To provide user authentication for network devices
- To enforce security policies on network devices
- To monitor network devices for performance issues
What is a benefit of next-generation firewalls?
What is a benefit of next-generation firewalls?
- Ability to perform network address translation
- Ability to do user identification (correct)
- Ability to scan for malware
- Ability to perform routing decisions
What is a common use case for integrating a firewall with Active Directory?
What is a common use case for integrating a firewall with Active Directory?
- To enforce group policy objects
- To manage DNS resolution
- To query group membership for policy decisions (correct)
- To authenticate users for access to the internet
What is the primary purpose of sending logs to a Syslog server?
What is the primary purpose of sending logs to a Syslog server?
What is the purpose of an agent running on a networking device in the context of SNMP?
What is the purpose of an agent running on a networking device in the context of SNMP?
What is an example of a tipping point that might trigger a notification to a management system?
What is an example of a tipping point that might trigger a notification to a management system?
Which of the following is a benefit of using a Syslog server?
Which of the following is a benefit of using a Syslog server?
What is the primary function of a network access device?
What is the primary function of a network access device?
What is the primary purpose of integrating a firewall with a Windows Server?
What is the primary purpose of integrating a firewall with a Windows Server?
Which of the following is a common scenario where a server is acting as a front end?
Which of the following is a common scenario where a server is acting as a front end?
What is a common scenario where infrastructure application layer services are used?
What is a common scenario where infrastructure application layer services are used?
What is the name of the protocol that is often referred to as the 'granddaddy' of infrastructure protocols?
What is the name of the protocol that is often referred to as the 'granddaddy' of infrastructure protocols?
What is the purpose of.Syslog port 514?
What is the purpose of.Syslog port 514?
Which of the following is a benefit of using a centralized Syslog server?
Which of the following is a benefit of using a centralized Syslog server?
What is the primary purpose of a database server?
What is the primary purpose of a database server?
Which of the following is a common application layer service?
Which of the following is a common application layer service?
What is the primary purpose of the management station in SNMP?
What is the primary purpose of the management station in SNMP?
Which version of SNMP is considered secure?
Which version of SNMP is considered secure?
What is the primary purpose of an SNMP trap?
What is the primary purpose of an SNMP trap?
What is the well-known port used by SNMP?
What is the well-known port used by SNMP?
What is the primary purpose of LDAP?
What is the primary purpose of LDAP?
What is the difference between LDAP and LDAP over SSL?
What is the difference between LDAP and LDAP over SSL?
What is the primary purpose of Syslog?
What is the primary purpose of Syslog?
What is the relationship between the management station and network devices in SNMP?
What is the relationship between the management station and network devices in SNMP?
What is the benefit of using SNMP version 3?
What is the benefit of using SNMP version 3?
What is the purpose of using LDAP over SSL?
What is the purpose of using LDAP over SSL?
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Study Notes
Infrastructure Application Layer Services
- Administrators and engineers use infrastructure services to monitor devices, receive feedback, and integrate with other systems.
- These services enable devices to communicate with each other and with management systems, allowing for monitoring, troubleshooting, and integration.
Simple Network Management Protocol (SNMP)
- SNMP is a protocol used for monitoring and managing devices on a network.
- It has an agent running on devices, and a management station that can query and receive responses from devices.
- SNMP allows for setting up thresholds, which can trigger devices to send messages back to the management station.
- There are different versions of SNMP, including version 1, 2, and 3, with version 3 being the most secure, offering authentication, encryption, and privacy.
SNMP Configuration
- SNMP uses UDP and TCP as layer 4 protocols.
- The well-known ports for SNMP are 161 (for SNMP service) and 162 (for SNMP traps).
Lightweight Directory Access Protocol (LDAP)
- LDAP is a protocol used for querying and accessing directory services, such as Active Directory.
- LDAP allows devices to make queries into Active Directory for authentication and other purposes.
- The well-known port for LDAP is 389, and for LDAP over SSL (secure) is 636.
Syslog
- Syslog is a protocol used for logging and forwarding log messages from devices to a centralized server.
- Syslog allows for logging events, tracking changes, and correlating log messages from multiple devices.
- The well-known ports for Syslog are 514, 1468, 1514, and 6514, depending on the type of Syslog server and flavor used.
Application Layer Services
- Infrastructure services, such as SNMP, LDAP, and Syslog, are used to support various applications, including user authentication, database access, and network management.
- These services enable devices to communicate with each other and with management systems, allowing for monitoring, troubleshooting, and integration.
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