CCNA Knowledge

What does FF01::1 represent in IPv6 addressing?

Node-local address, referring to the same node.

What is FF02::1 in IPv6?

Link-local address for all nodes on a link.

Define LLDP (Link Layer Discovery Protocol).

A protocol used for network devices to advertise their identity and capabilities on a LAN, running on Layer 2.

What does the command 'show lldp interface' do?

It displays information about LLDP on the specified interface.

What is VTP?

VLAN Trunking Protocol, a Cisco proprietary protocol that manages VLANs on a network for switch configuration.

Explain the EUI-64 method in IPv6.

It embeds the MAC address into the IPv6 address by splitting the MAC address and inserting 'FF FE' in the middle.

What is the format of an IPv6 address?

8 sets of 16-bit hexadecimal values separated by colons.

What is an IP Helper-address?

A Cisco command that forwards DHCP packets from one network to another.

What is the role of the Control Plane in a router?

It serves as the 'brain' of the router, determining how to move traffic.

Describe the structure of Cisco ACI architecture.

It uses a spine and leaf topology with the Application Policy Manager connected to leaf switches.

What are the modes of Cisco Lightweight AP?

Local Mode, FlexConnect, Bridge, Monitor Mode, Rogue Detector, and Sniffer Mode.

What does RSTP stand for?

Rapid Spanning Tree Protocol.

What is the purpose of Root Guard?

To prevent an unconfigured switch from becoming the root switch.

What is Cisco DNA?

Digital Network Architecture Center, a Cisco management solution using Software Defined Access (SDA).