单选题Which of the following is the purpose of QoS?（）A Load balance traffic across multiple LAN and WAN links.B Increase speed of network traffic.C Classify, mark, and prioritize traffic on WAN and LAN linksD Guarantee traffic delivery.

题目
单选题
Which of the following is the purpose of QoS?（）
A

Load balance traffic across multiple LAN and WAN links.

B

Increase speed of network traffic.

C

Classify, mark, and prioritize traffic on WAN and LAN links

D

Guarantee traffic delivery.

相似考题

1.You are working with a client to classify the different types of application traffic they will have on their network and to assign a QoS value to each traffic flow. The client has identified the following applications: Internet traffic, Oracle, network-based backups, AOL Instant Messenger, IP routing, voice, and voice signaling.Given these types of applications, how many different classes will need to be configured in QoS?（）A. 8B. 6C. 9D. 5

2.Which three QoS mechanisms can be configured to improve VoIP quality on a converged  network？（）A、The use of a queuing method that will give VoIP traffic strict priority over other traffic  B、The use of RTP header compression for the VoIP traffic.C、The proper classification and marking of the traffic as close to the source as possibleD、The use of 802.1QinQ trunking for VoIP trafficE、The use of WRED for the VoIP traffic

3.Which of the following statements is true about the 80/20 rule （Select all that apply）？（）A、20 percent of the traffic on a network segment should be local.B、no more than 20 percent of the network traffic should be able to move across a backbone.C、no more than 80 percent of the network traffic should be able to move across a backbone.D、80 percent of the traffic on a network segment should be local.

4.What does a router do?()A.Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)B.Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)C.Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN)D.Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN)

更多“单选题Which of the following is the purpose of QoS?（）A Load balance traffic across multiple LAN and WAN links.B Increase speed of network traffic.C Classify, mark, and prioritize traffic on WAN and LAN linksD Guarantee traffic delivery.”相关问题

  • 第1题：

    Refer to the exhibit. There are two sites connected across WAN links. All intersite and intrasite links always have the same routing metric. The network administrator sees only the top routers and links being used by hosts at both LAN A and LAN B. What would be two suggestions to load-balance the traffic across both WAN links？（）

    • A、 Make HSRP track interfaces between the edge and core routers.
    • B、 Replace HSRP with GLBP.  用GLBP替换HSRP
    • C、 Add crossed intrasite links： R1-R4， R2-R3， R5-R8， and R6-R7.
    • D、 Make R3 and R8 have lower HSRP priority than R1 and R7.
    • E、 Replace HSRP with VRRP

    正确答案:B,C

  • 第2题：

    If voice and data traffic will be sent and received via a WAN links， what must be configured to provide a certain amount of dedicated bandwidth and to prioritize the voice traffic over other types of network traffic？（）

    • A、IPSec VPN
    • B、QoS mechanism
    • C、Firewall
    • D、NAT
    • E、EIGRP routing protocol
    • F、Static routing

    正确答案:B

  • 第3题：

    Which Cisco IOS traffic-shaping mechanism statement is true？ （）

    • A、class-based policing is configured using the Modular QoS command-line （MQC）
    • B、only the Frame Relay traffic-shaping （FRTS） mechanism can interact with a Frame Relay network， adapting to indications of Layer2 congestion in the WAN links
    • C、Distributed Traffic Shaping （DTS） is configured with the police command under the policy map configuration
    • D、both Frame Relay traffic shaping （FRTS） and virtual IP （VIP）-based Distributed Traffic Shaping （DTS） have the ability to mark traffic

    正确答案:A

  • 第4题：

    Which two statements are true about network voice traffic？ （Choose two.）（）

    • A、 Voice traffic is affected more by link speed than FTP traffic is.
    • B、 Voice traffic is affected more by packet delays than FTP traffic is.
    • C、 Voice streams involve larger packet sizes than most TCP network traffic involves.
    • D、 Voice traffic is more sensitive to packet loss than TCP network traffic is.
    • E、 Voice traffic requires QOS mechanisms only in heavily loaded network segments.

    正确答案:B,D

  • 第5题：

    A customer indicates they run a mission-critical application which marks its packets best-effort (DSCP=0). How can you guarantee delivery of this traffic?（）

    • A、Remark the traffic on ingress and prioritize on egress.
    • B、Enable CEF and Netflow. 
    • C、Configure the MS-Windows QoS Scheduler to prioritize this traffic.
    • D、Enable WRED.

    正确答案:A

  • 第6题：

    单选题
    Which of the following is the purpose of QoS?（）
    A

    Load balance traffic across multiple LAN and WAN links.

    B

    Increase speed of network traffic.

    C

    Classify, mark, and prioritize traffic on WAN and LAN links

    D

    Guarantee traffic delivery.


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    A new server was installed for the purpose of monitoring network traffic. The network has been configured in such a way that all traffic will be mirrored out the port this server is connected to. When reviewing the network traffic logs on the server only traffic destined to the server is listed in the logs. Which of the following is preventing the server from seeing all network traffic?（）
    A

    NIC filtering is enabled.

    B

    Port security is configured.

    C

    NIC is not in promiscuous mode.

    D

    NIC is in promiscuous mode.


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the following devices should an administrator connect to a protocol analyzer in order tocollect all of the traffic on a LAN segment?（）
    A

    Hub

    B

    VLAN

    C

    Router

    D

    Server


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    You are the network administrator of an enterprise company that just deployed a global IP telephony environment. In order to guarantee good voice quality， you asked your provider to implement QoS on the CE routers of your MPLS network. On your LAN， you have also deployed QoS. Users， however， keep complaining about bad voice quality， and the provider does not see matches on the DSCP values that you have asked him to match upon. What is most likely the problem？（）
    A

    The phones are not sending traffic with the correct DSCP value.

    B

    The Cisco CallManager is not marking the traffic correctly.

    C

    This is most likely a bug on the CE routers.

    D

    Your LAN QoS is incorrectly configured.


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    What does a router do?（）
    A

    Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN)

    B

    Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)

    C

    Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN)

    D

    Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    What is the most common cause of network congestion？（）
    A

    aggregation congestion occurring at the core layer where the different distribution layer devices feed traffic to the core-layer switches

    B

    speed mismatches when moving from a low-speed LAN environment to a higher speed WAN environment

    C

    flapping Ethernet interfaces caused by misconfigured LAN interfaces

    D

    flapping serial interfaces caused by misconfigured WAN interfaces

    E

    speed mismatches when moving from a high-speed LAN environment to a lower speed WAN environment


    正确答案： C
    解析： 暂无解析

  • 第12题：

    多选题
    Which two statements correctly identify factors to consider when Configuring WAN QoS？（）
    A

    Voice Traffic uses Assured Forwarding

    B

    Voice Signaling traffic uses Assured Forwarding

    C

    Voice Signaling traffic uses priority queuing

    D

    Voice Traffic uses priority queuing

    E

    Voice signaling traffic should use priority queuing with Assured Forwarding


    正确答案： C,D
    解析： 暂无解析

  • 第13题：

    Which two statements are true when source/destination filters are enabled? （）(Choose two.)

    • A、Excluded traffic is not accelerated.
    • B、Excluded traffic is only compressed.
    • C、Source/destination filter applies to all traffic sent from LAN to WAN.
    • D、Source/destination filters work in packet interception mode using RIPv2.

    正确答案:A,C

  • 第14题：

    What does a router do?（）

    • A、Routes traffic down alternative paths and connects the local-area network (LAN) to the wide- area network (WAN)
    • B、Reads Media Access Control (MAC) addresses to forward messages to the correct location and connects the local-area network (LAN) to the wide-area network (WAN)
    • C、Stores data on the network and connects the local-area network (LAN) to the wide-area network (WAN)
    • D、Broadcasts data to all devices that are connected to it across the local-area network (LAN) and wide-area network (WAN)

    正确答案:A

  • 第15题：

    What is the most common cause of network congestion？（）

    • A、aggregation congestion occurring at the core layer where the different distribution layer devices feed traffic to the core-layer switches
    • B、speed mismatches when moving from a low-speed LAN environment to a higher speed WAN environment
    • C、flapping Ethernet interfaces caused by misconfigured LAN interfaces
    • D、flapping serial interfaces caused by misconfigured WAN interfaces
    • E、speed mismatches when moving from a high-speed LAN environment to a lower speed WAN environment

    正确答案:E

  • 第16题：

    Which two statements correctly identify factors to consider when Configuring WAN QoS？（）

    • A、Voice Traffic uses Assured Forwarding
    • B、Voice Signaling traffic uses Assured Forwarding
    • C、Voice Signaling traffic uses priority queuing
    • D、Voice Traffic uses priority queuing
    • E、Voice signaling traffic should use priority queuing with Assured Forwarding

    正确答案:B,D

  • 第17题：

    Which of the following is the purpose of QoS?（）

    • A、Load balance traffic across multiple LAN and WAN links.
    • B、Increase speed of network traffic.
    • C、Classify, mark, and prioritize traffic on WAN and LAN links
    • D、Guarantee traffic delivery.

    正确答案:C

  • 第18题：

    单选题
    Which of the following devices is used to connect multiple devices to a network and does not stopbroadcast traffic?（）
    A

    Switch

    B

    Hub

    C

    Modem

    D

    Repeater


    正确答案： C
    解析： 暂无解析

  • 第19题：

    多选题
    Which of the following statements is true about the 80/20 rule （Select all that apply）？（）
    A

    20 percent of the traffic on a network segment should be local.

    B

    no more than 20 percent of the network traffic should be able to move across a backbone.

    C

    no more than 80 percent of the network traffic should be able to move across a backbone.

    D

    80 percent of the traffic on a network segment should be local.


    正确答案： B,D
    解析： 暂无解析

  • 第20题：

    单选题
    Which Cisco IOS traffic-shaping mechanism statement is true？ （）
    A

    class-based policing is configured using the Modular QoS command-line （MQC）

    B

    only the Frame Relay traffic-shaping （FRTS） mechanism can interact with a Frame Relay network， adapting to indications of Layer2 congestion in the WAN links

    C

    Distributed Traffic Shaping （DTS） is configured with the police command under the policy map configuration

    D

    both Frame Relay traffic shaping （FRTS） and virtual IP （VIP）-based Distributed Traffic Shaping （DTS） have the ability to mark traffic


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    You are working with a client to classify the different types of application traffic they will have on their network and to assign a QoS value to each traffic flow. The client has identified the following applications: Internet traffic, Oracle, network-based backups, AOL Instant Messenger, IP routing, voice, and voice signaling. Given these types of applications, how many different classes will need to be configured in QoS?（）
    A

    8

    B

    6

    C

    9

    D

    5


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    If voice and data traffic will be sent and received via a WAN links， what must be configured to provide a certain amount of dedicated bandwidth and to prioritize the voice traffic over other types of network traffic？（）
    A

    IPSec VPN

    B

    QoS mechanism

    C

    Firewall

    D

    NAT

    E

    EIGRP routing protocol

    F

    Static routing


    正确答案： F
    解析： 暂无解析

  • 第23题：

    单选题
    A customer indicates they run a mission-critical application which marks its packets best-effort (DSCP=0). How can you guarantee delivery of this traffic?（）
    A

    Remark the traffic on ingress and prioritize on egress.

    B

    Enable CEF and Netflow. 

    C

    Configure the MS-Windows QoS Scheduler to prioritize this traffic.

    D

    Enable WRED.


    正确答案： B
    解析： 暂无解析

  • 第24题：

    多选题
    Refer to the exhibit. There are two sites connected across WAN links. All intersite and intrasite links always have the same routing metric. The network administrator sees only the top routers and links being used by hosts at both LAN A and LAN B. What would be two suggestions to load-balance the traffic across both WAN links？（）
    A

    Make HSRP track interfaces between the edge and core routers.

    B

    Replace HSRP with GLBP.  用GLBP替换HSRP

    C

    Add crossed intrasite links： R1-R4， R2-R3， R5-R8， and R6-R7.

    D

    Make R3 and R8 have lower HSRP priority than R1 and R7.

    E

    Replace HSRP with VRRP


    正确答案： B,C
    解析： 暂无解析

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