CompTIA N10-008 Practice Test - Questions Answers, Page 72

A physical diagram is a type of diagram that shows the physical layout and connections of the network devices and components, such as routers, switches, cables, and connectors. A physical diagram may include specifications about the fiber connector types, such as LC, SC, FC, ST, MPO, etc., that are used to link the fiber optic cables and devices.A physical diagram can help to visualize the network topology, troubleshoot network problems, and plan network changes

Link aggregation is a technique that allows multiple physical ports to be combined into a single logical channel, which provides increased bandwidth, load balancing, and redundancy. Link aggregation can be configured using protocols such as Link Aggregation Control Protocol (LACP) or static methods.

Reference

Link aggregation is one of the common Ethernet switching features covered in Objective 2.3 of the CompTIA Network+ N10-008 certification exam1.

Link aggregation can be used to connect two ports to the core switch to ensure redundancy23.

Link aggregation can be configured using LACP or static methods23.

1: CompTIA Network+ Certification Exam Objectives, page 52: Interface Configurations -- N10-008 CompTIA Network+ : 2.33: CompTIA Network+ N10-008 Cert Guide, Chapter 11, page 323

CNAME stands for Canonical Name, and it is a type of DNS record that creates an alias for another domain name. A CNAME record can be used to redirect a network resource that has been moved to a different location, such as a SaaS solution. For example, if a web server that was previously hosted on the local network with the domain name www.example.com is now hosted by a SaaS provider with the domain name www.saasprovider.com, a CNAME record can be created to point www.example.com to www.saasprovider.com. This way, the users can still access the web server using the original domain name, and the DNS server will resolve it to the new domain name.

Reference

CNAME is one of the common DNS record types covered in Objective 1.6 of the CompTIA Network+ N10-008 certification exam1.

CNAME can be used to redirect a network resource that has been moved to a different location23.

CNAME creates an alias for another domain name23.

1: CompTIA Network+ Certification Exam Objectives, page 42: DNS Record Types -- N10-008 CompTIA Network+ : 1.63: The Official CompTIA Network+ Student Guide (Exam N10-008), Chapter 1, page 32

SNMPv3 is a protocol that allows network administrators to monitor and manage network devices such as routers, switches, servers, printers, and more. SNMPv3 provides authentication and encryption features that ensure the security and integrity of the data exchanged between the management station and the network devices. SNMPv3 uses a user-based security model (USM) that supports three levels of security: noAuthNoPriv, authNoPriv, and authPriv.The noAuthNoPriv level provides no authentication or encryption, the authNoPriv level provides authentication but no encryption, and the authPriv level provides both authentication and encryption12.

SNMP is one of the common network monitoring protocols covered in Objective 3.1 of the CompTIA Network+ N10-008 certification exam3.

SNMPv3 provides authentication and encryption features for network monitoring12.

SNMPv3 uses a user-based security model with three levels of security12.

1: SNMP - N10-008 CompTIA Network+ : 3.1 - Professor Messer IT Certification Training Courses2: CompTIA Network+ N10-008 Cert Guide, Chapter 13, page 4133: CompTIA Network+ Certification Exam Objectives, page 7

A jump server is a system that allows remote access to internal devices through a single, secure device on the public network. A jump server can be configured with an access control list (ACL) to limit who can access the system and what devices they can connect to. A jump server can also use secure protocols such as SSH or VPN to encrypt the communication between the remote user and the internal device. A jump server is different from a VPN, which creates a virtual private network between the remote user and the internal network. A jump server is also different from a secure shell, which is a protocol that allows remote command execution and file transfer. An API is an application programming interface that allows software components to interact with each other.

Other Network Appliances -- SY0-601 CompTIA Security+ : 3.31

An SVI, or switched virtual interface, is a logical interface that is created on a Layer 3-capable device, such as a multilayer switch or a router. An SVI is associated with a VLAN and can be used to route traffic between different VLANs on the same device or across multiple devices. An SVI can also provide management access, security features, and quality of service (QoS) for the VLAN. An SVI is different from a physical interface, which is a port that connects to a physical device or network. A physical interface can be used for trunking, which is a method of carrying multiple VLANs over a single link, or for connecting to a single VLAN. An SVI is also different from a subinterface, which is a logical division of a physical interface that can be assigned to different VLANs.

VLANs and Trunking -- N10-008 CompTIA Network+ : 2.11

Switched Virtual Interfaces -- N10-008 CompTIA Network+ : 2.22

North-south traffic is any communication between components of a data center and another system, which is physically out of the boundary of the data center. It is also referred to as client-server traffic, as it usually involves requests from end users or external applications to the data center resources. For example, when a user accesses a web application hosted in a data center, the traffic between the user's browser and the web server is considered north-south traffic.

TTL stands for Time to Live, and it is a field on DNS records that controls how long each record is valid and cached by the DNS resolver before it expires and requests a new one. The TTL value is measured in seconds, and it affects how quickly DNS changes propagate across the Internet. A lower TTL means that the DNS resolver will refresh the record more frequently, but it also increases the load on the DNS servers. A higher TTL means that the DNS resolver will cache the record longer, but it also delays the update of the record.

A clientless VPN is a method of providing remote clients with access to an internal web application without installing any additional software or dedicated VPN client on their devices. Instead, users access the VPN through a web browser, utilizing a web portal or gateway provided by the VPN service. This method provides the highest flexibility and compatibility, as it supports various operating systems and devices, and encrypts only the connection to the web application, not the entire traffic of the device.