Tailgatingis a physical security breach where someone follows an authorized person into a restricted area without proper credentials. Once inside, the attacker can install rogue devices like unauthorized APs.
* A. Evil twinis a wireless attack where an attacker sets up a fake AP.
* B. Honeytrapis used to attract attackers for analysis.
* C. Wardrivinginvolves scanning for unsecured Wi-Fi networks while driving, not physical intrusion.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 4.2 - Identify common security threats and vulnerabilities.

NAT (Network Address Translation) allows multiple private IP addresses to share a single public IP when accessing the internet. This conserves public IPs and provides basic security by hiding internal addresses.
B . BGP is a routing protocol.
C . OSPF is a link-state IGP.
D . FHRP provides redundant gateways, not IP sharing.
Reference (CompTIA Network+ N10-009):

Clientless VPNs allow users to access network resources through a secure web portal using a browser, with no VPN software needed. This is ideal for occasional access to internal resources via HTTPS.
A: Proxy is a gateway for accessing web content, not a VPN.
C: Site-to-site VPN connects entire networks, not individual users.
D: Direct Connect usually refers to dedicated cloud connections, not VPNs.
# Reference:
CompTIA Network+ N10-009 Official Objectives: 3.3 - Given a scenario, configure and deploy common VPN technologies.

Link Layer Discovery Protocol (LLDP) is a network protocol used for discovering devices and their capabilities on a local area network, primarily at the data link layer (Layer 2). It helps in identifying the connected switch and the specific port to which a device is connected. When troubleshooting a VoIP handset connection, the technician can use LLDP to determine the exact switch and port where the handset is connected. This protocol is widely used in network management to facilitate the discovery of network topology and simplify troubleshooting.
Other options such as IKE (Internet Key Exchange), VLAN (Virtual LAN), and netstat (network statistics) are not suitable for identifying the switch and port information. IKE is used in setting up secure IPsec connections, VLAN is used for segmenting networks, and netstat provides information about active connections and listening ports on a host but not for discovering switch port details.

Acold disaster recovery (DR) siteis a backup facility equipped withminimal infrastructure, often lacking active systems or real-time data replication. Itsgreatest advantage is cost-efficiency. Cold sites aremuch cheaperto maintain than warm or hot sites, which require continuous synchronization and operational readiness. They are used when low cost is more important than recovery speed.