Layer 1
This is one of the most common problems for layer 1 (Multiple answers are accpted).
What are bad cables?
What is the cable not plugged in?
What is the cable is plugged into the wrong port?
This Layer 2 device forwards frames based on MAC address tables.
What is a switch?
This version of IP uses 32‑bit addresses.
What is IPv4?
This port on the management laptop connects to the switch
What is In-Band?
This enclave must have OSPF neighbors first, before any other enclave can establish tunnels.
What is colorless?
This connector type is used on most Ethernet twisted‑pair cables.
RJ‑45 connector.
This Layer 2 feature allows a switch to limit which MAC addresses can use a port.
What is port-security?
This Internet Control Message Protocol (ICMP) tool tests reachability by sending echo requests.
What is ping?
Cypher text from the KGV-250X connects to this switch.
What is the colorless switch?
When your management laptop cannot pull web GUIs or PacStar, you might verify this is correct? (Assuming all layer 1 is accurate and working).
What is the IP address?
This is the color order we use when making copper cables.
What is Orange, Orange-white, Green, Blue White, Blue, Green-White, Brown, Brown White?
This type of VLAN is used to carry management traffic such as switch configuration access.
What is management vlan? What is vlan 222?
This command shows all IPv4 addresses assigned to interfaces on a Cisco device.
What is show ip interface brief?
This is the amount of neighbors we see on a DNN SIPR router.
What are 2?
This device inspects traffic based on security rules before allowing it to leave or enter a network.
What is a firewall.?
This is the maximum recommended length for a copper Ethernet run before signal degradation becomes significant.
What is 100m?
This command shows an operator what VLANs are created and which ports they are active on.
What is show vlan brief?
This protocol is used by routers to exchange reachability information within a single autonomous system.
What is OSPF (Open Shortest Path First)?
This command allows an operator to see how many users are connected to the switch.
What is show mac address-table?
These are the options when you consol into a device. (There are 3)
What are Telenet, SSH, and Serial?
This type of fiber‑optic cable uses a single light path and is ideal for long‑distance, high‑bandwidth links.
What is Single-mode fiber?
This protocol prevents switching loops by blocking redundant paths.
What is STP (Spanning Tree Protocol)?
This device is typically the first Layer‑3 hop for clients on a LAN, forwarding traffic toward external networks.
What is the default gateway?
This small module lets a 10‑gigabit fiber slot on a switch connect to standard copper cabling using an RJ‑45 jack.
What is an Small Form‑Factor Pluggable (SFP)?
This is the purpose of native vlan 2.
What is provides a single untagged VLAN on a trunk so switches can handle control traffic and any untagged frames consistently.