Yes
An RJ-45 connector is the the connector at the end of a Cat-# cable (also known as a lan cable/network cable).
Cat 5, Cat 5e
CAT7 cable is short for Category 7 cable. This network cable is used as a cabling infrastructure for certain networks. It provides performance of up to 600 MHz and can be used up to 100 meters.
Ethernet network traffic on a cat 5 cable only uses 4 wires of the 8 in the cable. Telephone voice transmission only uses 2 wires. Therefore, you can take any 2 of the unused network wires (pins 4 or 5, 7 or 8) and use it for voice. You would then have both data and voice transmission in the same cable.
Pins 4 - 5 and 7 - 8 are not used for carrying network signals. They may be used for other purposes.
Cat 6
standard cat 5 e and cat 6 the normal cable you will find in use with you router is 100m other types of network cable vary look them up on google
Cat-5 cable, sometimes called Ethernet cable, is short for Category 5 cable, a current industry standard for network and telephone wiring. Cat-5 cable is unshielded wire containing four pairs of 24-gauge twisted copper pairs, terminating in an RJ-45 jack. If a wire is certified as Cat-5 and not just a twisted pair wire, it will have "Cat-5" printed on the shielding.
Connect the computers using a Cat 5(e) network cable. Set both computers to the same subnet (ex: laptop1 ip: 192.168.0.1 laptop 2 ip: 192.168.0.2) and the same workgroup.
2 wire of pair
Both the coaxial cable and twisted pair cable have a basic connection medium for network cabling. <<>> Coaxial cable can be used for transmission of RF (radio frequencies) whereas Cat 5 (twisted pairs cable) can not.
A regular Cat 5e or Cat 6 RJ-45 straight-through Ethernet network cable.