IS 3120 CHAPTER 4 Flashcards
IEEE 802.3a Ethernet standard that defines communication at 10 Mbps using thin coaxial cable.
10Base2 “Thinnet”
IEEE 802.3 Ethernet standard that defines communication at 10 Mbps using thick coaxial cable
10Base5 “Thicknet”
IEEE 802.3i Ethernet standard that defines communication at 10 Mbps using unshielded twisted-pair cable
10BaseT
IEEE 802.3u Ethernet standard that defines communication at 10 Mbps using unshielded twist-pair cable
100BaseTX
IEEE 802.3ab ethernet standard that defines communication at 10 Mbps using unshielded twisted-pair cable
1000Base (GigE)
A topology used to connect several smaller networks to create a larger, segregated network
Backbone
A backbone that connects other backbones to create a larger network
Campus backbone
A network topology that minimizes traffic flowing between departmental LANs by replacing a bus with one or more central switches
Collapsed backbone
The collection of nodes that exchange unfiltered traffic with other nodes
Collision domain
A network at the last 100 meters or 300 feet from a wiring closet, where desktops physically connect to the network
Edge network
A family of networking technologies that define how computers and devices communicate on a LAN
Ethernet
The transmitting node assumes its transmissions will al be successful
Optimistic transmission
Network that rely on immediate traffic delivery, such as streaming audio or video
Real-time applications
Network communication protocols that guarantee delivery within a specified amount of time
Time-sensitive protocols
A group of people and the devices they use to perform related job functions.
Workgroup
- Early implementations of Ethernet used coaxial cable.
TRUE OR FALSE
TRUE
- What was the original transmission speed of Ethernet under the 802.3 standard?
- 2.94 Mbps
- 4.77 Mbps
- 10 Mbps
- 100 Mbps
10 Mbps
- Which of the following devices only extends the maximum distance between two Ethernet nodes (doesn’t provide any other services)?
- Router
- Bridge
- Switch
- Repeater
Repeater
- Which of the following network devices separate nodes into separate collision domains?
- Hub
- Repeater
- Switch
- Router
Switch
- What node identification does a switch use to forward frames to the correct destination?
- Network address
- MAC address
- Node ID
- Protocol ID
Node ID
- Which switching method starts transmitting a frame as soon as it reads the destination address?
- Cut-through
- Store-and-forward
- Trunking
- Aggregation
Cut-through
- The original Ethernet standard used a software token to avoid collisions.
TRUE OR FALSE
FALSE
- Which of the following topologies, along with unshielded twisted-pair cabling, transformed LAN connectivity and make LAN access more accessible?
- Ring
- Bus
- Star
- Mesh
Star
- Which simple action does CSMA/CD require to avoid transmitting on a busy channel?
- Listen for a clear channel
- Wait for a token
- Wait for a random amount of time
- Listen to the echo of the transmitted message
Listen for a clear channel
- What is the best reason to create a workgroup LAN?
- Workgroups are small and require less cabling
- The majority of workgroup traffic stays within the workgroup
- Most switches can’t handle more ports than the average workgroup size
- Hierarchical topologies provide the best performance
Most switches can’t handle more ports than the average workgroup size
- What was the most common topology used in early Ethernet networks?
- Ring
- Star
- Tree
- Bus
Bus
- Real time applications benefit from the higher performance of which type of network devices?
- Layer 1 hub
- Layer 2 switch
- Layer 3 router
- Layer 4 stateful firewall
Layer 2 switch
