NETW2 Logs

A logical, software-only interface with no physical port that stays "up" whenever the router is running — handy as a never-down test target or router ID. Key characteristics: Not a physical port — cannot be connected to any device Automatically in an "up" state whenever the rout...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026

show interfaces <interface-id> — its first line gives the up/up state, and a few lines down the output names the duplex and speed the port is really running. S1# show interfaces fastEthernet 0/18 FastEthernet0/18 is up, line protocol is up (connected) Hardware is Fast Ethernet,...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026

Use the duplex and speed interface-configuration commands (both default to auto). S1# configure terminal S1(config)# interface FastEthernet 0/1 S1(config-if)# duplex full S1(config-if)# speed 100 S1(config-if)# end S1# copy running-config startup-config Default settings: Both du...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026

show ip interface brief for a status summary, show running-config interface for the exact config, and show ip route to confirm the connected networks appeared. Command Purpose show ip interface brief Quick summary of all interfaces — IP (Internet Protocol) address, status,...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026

Run show version and look for k9 in the IOS image name — that marks a cryptographic image. Without it the switch has no encryption engine to build an SSH session on. S1# show version Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 15.0(2)SE7, RELEASE SOFTWARE (fc1...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026

Auto-MDIX (Automatic Medium-Dependent Interface Crossover) detects whether a straight-through or crossover cable is plugged in and flips the port's internal wiring to match — so either cable works. * Crossover wiring that auto-MDIX makes unnecessary. — W Nowicki, CC BY-SA 3.0, v...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026

It lists every interface with its IP (Internet Protocol) address, OK?, method, Status and Protocol; anything other than up/up flags a problem — e.g. administratively down (forgot no shutdown) or unassigned (no IP set). R1# show ip interface brief Interface IP-Address...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026

Dual stack means the interface carries a complete IPv4 configuration and a complete IPv6 configuration at once, running the two protocols side by side over one physical link. * Two independent stacks, one wire. * R1(config)# interface gigabitethernet 0/0/0 R1(config-if)# ip addr...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026

The core set: show interfaces, show running-config/show startup-config, show flash, show version, show ip/ipv6 interface, and show mac-address-table. Command What It Shows show interfaces [interface-id] Interface status, statistics, speed, duplex, errors show startup-con...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026

Two per interface: a link-local address (FE80::), valid only on the local link, and a globally routable global unicast address. * Every IPv6 interface has a link-local address; the global one is configured. * R1# show ipv6 interface brief GigabitEthernet0/0/0 [up/up] FE80::72...

Quiz: NETW2 / Basic Device Configuration | updated: Aug 27, 2026