| A | B |
|---|
| Ethernet architecture is now the most popular | type of LAN architecture |
| Network Architecture refers to the overall | structure of a computer or communication system. |
| The Ethernet architecture is based on the | IEEE 802.3 standard. |
| The IEEE 802.3 standard specified media access control method | Carrier Sense Multiple Access with Collision Detection (CSMA/CD) |
| CSMA/CD uses baseband transmission over coaxial or twisted-pair cable that is | laid out in a bus topology (a linear or star bus) |
| Standard transfer rates are | 10 Mbps or 100 Mbps |
| New standards provide for gigabit Ethernet, which are capable of | attaining speeds up to 1 Gbps over fiber-optic cable or other high-speed media. |
| 10BASE-T is one of the most | popular Ethernet implementations |
| 10BASE-T uses a | star topology |
| In 10BASE-T the 10 stands for the | common transmission speed of 10 MBps |
| In 10BASE-T the "BASE" stands for | baseband mode |
| In 10BASE-T the "T" stands for twisted pair cabling. | twisted pair cabling. |
| The term Ethernet cable is used to describe the | Unshielded Twisted-Pair (UTP) cabling that is generally used in this architecture. |
| Advantages of 10BASE-T | relatively inexpensive; Twisted-pair cabling is thin, flexible, and easier to work; easy upgraded |
| Disadvantages of 10BASE-T | maximum media length only 100 meters; vulnerable to EMI and attenuation; extra cost of a hub |
| 100BASE-T can be implemented over | 4-pair Category 3, 4, or 5 UTP |
| 100BASE-TX can be implemented over | 4-pair Category 5 UTP or Shielded Twisted Pair |
| 100BASE-FX can be implemented as | Ethernet over 2-strand fiber-optic cable |
| Advantages of 100BASE-X | High speed performance; low cost; flexibility; ease of implementation and expansion |
| Disadvantages of 100BASE-X | Susceptible to EMI & attenuation; 100-Mbps NIC cost more; requires better trained technicians |
| 100BASE-X is known as | Fast Ethernet |
| 1000BASE-T is known as | Gigabit Ethernet |
| Disadvantages of 1000 BASE-T | Same as 10 BASE-T and 100 BASE-T |
| Advantages of 1000 BASE-T | 10 times faster than Fast Ethernet; 100 times faster than Standard |
