If a router is used, the collision domain includes all devices connected to the router.
If a hub is used, the collision domain is limited to each device and the hub.
If a switch is used, the collision domain is limited to each device and the switch.
If a bridge is used, the collision domain includes all devices connected to the bridge.
第1题：
Which of the following a true statements regarding the use of VLANs to segment a network? (Select three)
A. They increase the size of collision domains
B. They allow logical grouping of users by function.
C. They can enhance network security.
D. They increase the size of the broadcast domain while decreasing the number of collision domains.
E. They increase the number of broadcast domains while decreasing the size of the broadcast domains.
F. They simplify switch administration.
第2题：
A. Use of full duplex mode.
B. Creation of new collision domain.
C. Creation of new broadcast domain.
D. Addition of hub to the network.
E. Use of switches in the network.
F. Amount of ARP or IPX SAP traffic.
第3题：
Two stations on the Ezonexam LAN transmit at the same time, resulting in a collision. What happens when a collision occurs on the network? (Choose all that apply)
A．Each device on the Ethernet segment stops transmitting for a short time.
B．A jam signal informs all devices that a collision occurred.
C．When data transmission resumes, the devices that were involved in the collision have priority to transmit.
D．The devices that are involved in the collision stops transmitting for a short time.
E．The collision invokes a random back-off algorithm.
第4题：
Which statement is true regarding an Ethernet collision domain?（）
第5题：
A. Half-duplex Ethernet operates in a shared collision domain.
B. Full-duplex Ethernet has a lower effective throughput.
C. Half-duplex Ethernet operates in a private collision domain.
D. Full-duplex Ethernet allows two-way communication.
E. Half-duplex Ethernet operates in a private broadcast domain.
第6题：
A.Firewall
B.Bridge
C.Repeater
D.Router
第7题：
A. Each device on the Ethernet segment stops transmitting for a short time.
B. A jam signal informs all devices that a collision occurred.
C. When data transmission resumes, the devices that were involved in the collision have priority to transmit.
D. The devices that are involved in the collision stops transmitting for a short time.
E. The collision invokes a random back-off algorithm.
第8题：
Which two statements describe the operation of the CSMA/CD access method, which is in use on the Ezonexam network? (Choose two)
A. After a collision, the station that detected the collision has first priority to resend the lost data.
B. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.
C. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.
D. The use of hubs to enlarge the size of collision domains is one way to improve the operation of the CSMA/CD access method.
E. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.
F. After a collision, all stations involved run an identical backoff algorithm and then synchronize with each other prior to transmitting data.
第9题：
A. Bridges are faster than switches because they have fewer ports.
B. A switch is a multiport bridge.
C. Bridges and switches learn MAC addresses by examining the source MAC address of each frame received.
D. A bridge will forward a broadcast but a switch will not.
E. Bridges and switches increase the size of a collision domain.
第10题：
Which two statements are true regarding an Ethernet collision domain?（）