In broadcast network the first adj of ospf is 2-way？why？this question will give you a picture.

第1题：

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第3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4题：

A new network has been configured using OSPF as the routing protocol. With which network type will OSPF establish router adjacencies but not perform the DR/BDR election process?（）

• A、point-to-point
• B、Backbone area 0
• C、Broadcast multicast
• D、Non-broadcast multi-access
• E、The DR/BDR process is done for all interface types

正确答案:A

第5题：

You are experiencing intermittent issues relating to congestion with your network.What are the possible causes of congestion on a LAN?（）

• A、A broadcast domain with too many hosts.
• B、Full duplex operation.
• C、Broadcast storms.
• D、Multicasting.
• E、Network Segmentation.
• F、Low bandwidth.

正确答案:A,C,F

第6题：

On which types of network will OSPF elect a backup designated router?（）

• A、point-to-point and multiaccess
• B、point-to-multipoint and multiaccess
• C、point-to-point and point-to-multipoint
• D、nonbroadcast and broadcast multipoint
• E、nonbroadcast and broadcast multiaccess

正确答案:E

第7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8题：

A default Frame Relay WAN is classified as what type of physical network（）。

• A、point-to-point
• B、broadcast multi-access
• C、nonbroadcast multi-access
• D、nonbroadcast multipoint
• E、broadcast point-to-multipoint

正确答案:C

第9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 their size.
• G、VLANs make it easier for IT staff to configure new logical groups,because the vlans all belong to the same broadcast domain.

正确答案:C,E,F

第10题：

Which of the following network devices would MOST likely be installed on a network to helpreduce broadcast traffic and to allow individual virtual networks?（）

• A、Switch
• B、Repeater
• C、Hub
• D、WAP

正确答案:A

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第15题：

How are VTP advertisements delivered to switches across the network?（）

• A、anycast frames
• B、multicast frames
• C、broadcast frames
• D、unicast frames

正确答案:B

第16题：

In regard to a hub and spoke Frame-Relay data network, what kind of physical network is it classified as?（）

• A、point-to-point
• B、broadcast multi-access
• C、nonbroadcast multipoint
• D、nonbroadcast multi-access
• E、broadcast point-to-multipoint

正确答案:D

第17题：

Which statement correctly describes network security settings in Cisco Network Assistant for the Catalyst Express 500 Switch？（）

• A、The LOW setting enables broadcast storm control， but has no effect on the number of devices that can connect to a switch port
• B、The LOW setting enables broadcast storm control and limits the number of devices that can connect to a switch port.
• C、The LOW setting disables broadcast storm control but limits the number of devices that can connect to a switch port
• D、The default network setting is "HIGH"

正确答案:B

第18题：

What parameters must you specify when you enable EIGRP routing?（）

• A、The broadcast address, and AS number
• B、The network number and AS number
• C、EIGRP routing, network number and passive interface
• D、EIGRP routing, network number, and AS

正确答案:D

第19题：

Why will a switch never learn a broadcast address?（）

• 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.

正确答案:C

第20题：

A default Frame Relay WAN is classified as what type of physical network？（）

• A、point-to-point
• B、broadcast multi-access
• C、nonbroadcast multi-access
• D、nonbroadcast multipoint.broadcast point-to-multipoint

正确答案:C

第21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、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.

正确答案:B,C,E

第22题：

Which of the following is a layer 3 device that separates broadcast domains?（）

• A、Network Interface Card
• B、Hub
• C、Bridge
• D、Router

正确答案:D

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