juniper认证考试
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 b
题目
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.
相似问题和答案
第1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2题：
A.Firewall
B.Bridge
C.Repeater
D.Router
第3题：
Ezonexam has implemented the use of VLANs in their network. Which of the following are considered to be a benefit of VLANs? (Choose 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. The increase the size of broadcast domains while decreasing the number of the broadcast domains.
E. The increase the number of broadcast domains while decreasing the size of the broadcast domains.
F. They simplify switch administration.
B,C,E 解析：Explanation:
There are many motivations for using VLANs, including these:
1. To group users by department, or by groups that work together, instead of by physical location. (B)
2. To reduce overhead by limiting the size of each broadcast domain (E)
3. To enforce better security by keeping sensitive devices on a separate VLAN (C)
4. To separate specialized traffic from mainstream traffic - for example, putting IP telephones on a separate VLAN form. user PCs.
第4题：
What are three benefits of implementing vlans？（）
- A、A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure
- B、Broadcast storms can be mitigated by decreasing the number of broadcast domains，thus increasing their size
- C、A higher level of network security can be reached by separating sensitive data traffic from other network traffic
- D、Port-based vlans increase switch-port use efficient，thanks to 802.1Q trunks
- E、A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure
- F、Broadcast storms can be mitigated by increasing the number of broadcast domains，thus reducing theirsize
- G、VLANs make it easier for IT staff to configure new logical groups，because the vlans all belong to thesame broadcast domain
正确答案:C,E,F
第5题：
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 broadcast domains 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6题：
A.Routers facilitate communications within a broadcast domain.
B.Routers facilitate communications between broadcast domains.
C.Routers are used to break up broadcast domains into separate networks.
D.Routers are used to connect small broadcast domains and form larger more efficient broadcast domains
第7题：
A. There are two broadcast domains in the network.
B. There are four broadcast domains in the network.
C. There are six broadcast domains in the network.
D. There are four collision domains in the network.
E. There are five collision domains in the network.
F. There are seven collision domains in the network.
第8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.
B,C,E 解析：Explanation:
VLANs are used to segment a LAN into multiple, smaller LANs. This can be used to enhance security as local traffic from one VLAN will not be passed to users in other VLANS.
Incorrect Answers:
A. VLANs are used to decrease the size of a collision domain, not increase it.
D. The opposite is true.
F. The default operation of a switch is to allow all traffic and to enable all ports in VLAN1. The use of VLANs will increase the complexity of the switch environment, making for more difficult administration.
第9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10题：
Which of the following are benefits of VLANs?（）
- 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 broadcast domains 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.
正确答案:B,C,E