juniper认证考试
Which two statements are correct about Layer 2 broadcast frames?（）A、Layer 2 broadcast frames are processed by all devices on the same VLANB、Layer 2 broadcast frames are discarded by routers that connect to multiple VLANsC、Layer 2 broadcast frames are rela
题目
Which two statements are correct about Layer 2 broadcast frames?（）
- A、Layer 2 broadcast frames are processed by all devices on the same VLAN
- B、Layer 2 broadcast frames are discarded by routers that connect to multiple VLANs
- C、Layer 2 broadcast frames are relayed by routers to all connected VLANs
- D、Layer 2 broadcast frames are relayed by switches to devices on the same VLAN
相似问题和答案
第1题：
A. end-to-end communications path
B. hosts on the same Layer 2 broadcast domain
C. hosts on the same Layer 3 broadcast domain
D. routing information on participating Layer 3 devices
第2题：
A. decreasing the number of collision domains
B. filtering frames based on MAC addresses
C. allowing simultaneous frame transmissions
D. increasing the size of broadcast domains
E. increasing the maximum length of UTP cabling between devices
第3题：
VE1 is a switch in the Ezonexam network. Why will VE1 never learn the broadcast address?
A. Broadcast frames are never sent to switches
B. A broadcast frame. is never forwarded by a switch
C. Broadcasts only use network layer addressing
D. A broadcast address will never be the source address of a frame
E. Broadcast addresses use an incorrect format for the switching table
F. None of the above
D
第4题：
Bridges and switches are Layer 2 devices that provide the same basic functionality but that also have some differences. Which two traits apply to switches only？（）
- A、 supports Layer 2 VLANs
- B、 segment LANs
- C、 are faster because forwarding decisions are made on hardware
- D、 typically have fewer ports because forwarding decisions are made in software
- E、 flood frames out all ports
正确答案:A,C
第5题：
A.Broadcasts only use network layer addressing.
B.A broadcast frame is never forwarded by a switch.
C.A broadcast address will never be the source address of a frame.
D.Broadcast addresses use an incorrect format for the switching table.
E.Broadcast frames are never sent to switches.
第6题：
A. Application Layer
B. Presentation Layer
C. Data Link Layer
D. Physical Layer
第7题：
A.Microsegmentation decreases the number of collisions on the network.
B.if a switch receives a frame for an unkown destination,it uses ARP to resolve the address.
C.Spanning Tree Protocol allows switches to automatically share vlan information.
D.In a properly functioning network with redundant switched paths,each switched aegment will contain one root bridge with all its ports in the forwarding state.All other switches in that broadcast domain will have only one root port.
E.Establishing vlans increases the number of broadcast domains.
F.Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3 address information.
第8题：
A. Broadcast domains require that the participating devices connect to common switches or hubs.
B. Broadcast domains consist of devices reachable by frames addressed to the Layer 2 broadcast address.
C. Broadcast domains require a gateway device such as a router.
D. Broadcast domains consist of devices that reside on the same VLAN.
第9题：
Which two statements accurately describe a broadcast domain?（）
- A、Broadcast domains consist of devices that connect to a common switch or hub.
- B、Broadcast domains consist of a group of devices that can be reached by sending a frame addressed to the Layer 2 broadcast address.
- C、Broadcast domains require a gateway device such as a router.
- D、Broadcast domains consist of devices that reside on the same sub-network.
正确答案:B,D
第10题：
What are two advantages of Layer 2 Ethernet switches over hubs?（）
- A、decreasing the number of collision domains
- B、filtering frames based on MAC addresses
- C、allowing simultaneous frame transmissions
- D、increasing the size of broadcast domains
- E、increasing the maximum length of UTP cabling between devices
正确答案:B,C