Explanation/Reference:
When working with distances up to 2 km, use multimode optical-fiber cable.
Like multi-mode optical fibers, single mode fibers do exhibit modal dispersion resulting from multiple spatial modes but with narrower modal dispersion. Single mode fibers are therefore better at retaining the fidelity of each light pulse over longer distances than multi-mode fibers.
Incorrect:
Cat5e and Cat6 max cable length is 100 metres.

A router is a device that forwards data packets along networks. A router is connected to at least two networks, commonly two LANs or WANs or a LAN and its ISP's network. Routers are located at gateways, the places where two or more networks connect.

Explanation:
* TRACERT prints out an ordered list of the routers in the path that returned the ICMP Time Exceeded message.
* Ping, not tracert, determines packet loss.
* Tracert just displays the path to the target, not all connections.
Note
* Example:
tracert 11.1.0.1
Tracing route to 11.1.0.1 over a maximum of 30 hops
1 2 ms 3 ms 2 ms 157.54.48.1
2 75 ms 83 ms 88 ms 11.1.0.67
3 73 ms 79 ms 93 ms 11.1.0.1
Trace complete.
* The TRACERT diagnostic utility determines the route taken to a destination by sending Internet Control Message Protocol (ICMP) echo packets with varying IP Time-To-Live (TTL) values to the destination. Each router along the path is required to decrement the TTL on a packet by at least 1 before forwarding it, so the TTL is effectively a hop count. When the TTL on a packet reaches 0, the router should send an ICMP Time Exceeded message back to the source computer.

Explanation/Reference:
These are valid: