更多“单选题A stateless firewall requires a technician to:()A Write more packet filters.B Write less packet filters.C Purchase a license for states.D Upgrade definitions manually”相关问题
  • 第1题:

    A stateless firewall requires a technician to:()

    A. Write more packet filters.

    B. Write less packet filters.

    C. Purchase a license for states.

    D. Upgrade definitions manually


    参考答案:A

  • 第2题:

    When we write, we must write as()as we can.

    • A、careful
    • B、carefully
    • C、more careful
    • D、more carefully

    正确答案:B

  • 第3题:

    What is a static packet-filtering firewall used for ?()

    • A、It validates the fact that a packet is either a connection request or a data packet belonging to a connection
    • B、It evaluates network packets for valid data at the application layer before allowing connections
    • C、It analyzes network traffic at the network and transport protocol layers
    • D、It keeps track of the actual communication process through the use of a state table

    正确答案:C

  • 第4题:

    A traditional router is better suited than a firewall device for which function?()

    • A、VPN establishment
    • B、packet-based forwarding
    • C、stateful packet processing
    • D、Network Address Translation

    正确答案:B

  • 第5题:

    What are the DSL-specific factors that require additional bandwidth when supporting Voice-over-IP over an IPSec VPN?()

    • A、A voice packet is sent via multiple fixed-length cells; a portion of the last cell is padding, requiring more bandwidth.
    • B、ADSL typically uses PPPoE encapsulation, which adds additional overhead to each voice packet.
    • C、A voice packet is sent via multiple fixed-length cells; each cell has about 10% Layer-2 header overhead. 
    • D、IPSec requires additional overhead for the header and hash. 
    • E、ADSL carrier band requires additional bits to be carried over the wire to the DSL Access Concentrator.

    正确答案:A,B,C

  • 第6题:

    A stateless firewall requires a technician to:()

    • A、Write more packet filters.
    • B、Write less packet filters.
    • C、Purchase a license for states.
    • D、Upgrade definitions manually

    正确答案:A

  • 第7题:

    A packet is evaluated against three user-defined terms within a firewall filter and no match isfound. What correctly describes the action the firewall filter will take for this packet?()

    • A、The filter will permit the packet and take no additional action.
    • B、The filter will reject the packet and send an ICMP message back to the sender.
    • C、The filter will discard the packet and take no additional action.
    • D、The filter will permit the packet and write a log entry to the firewall log.

    正确答案:C

  • 第8题:

    单选题
    A technician installs a CD-RW drive with a feature that enables the drive to write labels directly onto the disk. The computer will burn disks but will not write labels. Which of the following should the technician do NEXT?()
    A

    Reboot the computer

    B

    Remove the drive and reinstall

    C

    Install the device driver

    D

    Flash the BIOS


    正确答案: D
    解析: 暂无解析

  • 第9题:

    单选题
    Why is IPv6 packet processing more effective than IPv4 packet processing?()
    A

    fixed header size

    B

    smaller header size

    C

    fewer header fields

    D

    variable header size


    正确答案: A
    解析: 暂无解析

  • 第10题:

    单选题
    Which of the following devices would allow a technician using a packet sniffer to view all the dataon a network?()
    A

    GBIC

    B

    Hub

    C

    Bridge

    D

    Modem


    正确答案: D
    解析: 暂无解析

  • 第11题:

    单选题
    A packet is evaluated against three user-defined terms within a firewall filter and no match is found. What correctly describes the action the firewall filter will take for this packet?()
    A

    The filter will permit the packet and take no additional action.

    B

    The filter will reject the packet and send an ICMP message back to the sender.

    C

    The filter will discard the packet and take no additional action.

    D

    The filter will permit the packet and write a log entry to the firewall log.


    正确答案: C
    解析: 暂无解析

  • 第12题:

    多选题
    Firewall filters can perform which two actions?()
    A

    Log packet.

    B

    Count packet.

    C

    Set packet metric.

    D

    Decrement packet TTL.

    E

    Change destination IP address.


    正确答案: E,D
    解析: 暂无解析

  • 第13题:

    A packet is evaluated against three user-defined terms within a firewall filter and no match is found. What correctly describes the action the firewall filter will take for this packet?()

    • A、The filter will permit the packet and take no additional action
    • B、The filter will reject the packet and send an ICMP message back to the sender
    • C、The filter will discard the packet and take no additional action
    • D、The filter will permit the packet and write a log entry to the firewall log

    正确答案:C

  • 第14题:

    Which type of firewall is needed to open appropriate UDP ports required for RTP streams?()

    • A、Stateful firewall
    • B、Proxy firewall
    • C、Packet filtering firewall
    • D、Stateless firewall

    正确答案:A

  • 第15题:

    Which statement describes the PFE?()

    • A、The PFE controls the RE by providing Layer 2 and Layer 3 forwarding tables
    • B、The PFE implements advanced services such as policing, stateless firewall filtering, and class of service
    • C、The PFE sends traffic to the RE for systematic packet forwarding
    • D、The PFE receives hardware and environmental status messages from the RE

    正确答案:B

  • 第16题:

    Which two firewall filter actions will terminate the processing and evaluation of a packet?()

    • A、permit
    • B、accept
    • C、deny
    • D、discard

    正确答案:B,D

  • 第17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18题:

    Firewall filters can perform which two actions?()

    • A、Log packet.
    • B、Count packet.
    • C、Set packet metric.
    • D、Decrement packet TTL.
    • E、Change destination IP address.

    正确答案:A,B

  • 第19题:

    Firewall filters can perform which two actions?()

    • A、Log packets.
    • B、Set packet metrics.
    • C、Count packets.
    • D、Decrement packet's TTL value.

    正确答案:A,C

  • 第20题:

    单选题
    What is a static packet-filtering firewall used for ?()
    A

    It validates the fact that a packet is either a connection request or a data packet belonging to a connection

    B

    It evaluates network packets for valid data at the application layer before allowing connections

    C

    It analyzes network traffic at the network and transport protocol layers

    D

    It keeps track of the actual communication process through the use of a state table


    正确答案: C
    解析: 暂无解析

  • 第21题:

    单选题
    Which statement describes the PFE?()
    A

    The PFE controls the RE by providing Layer 2 and Layer 3 forwarding tables

    B

    The PFE implements advanced services such as policing, stateless firewall filtering, and class of service

    C

    The PFE sends traffic to the RE for systematic packet forwarding

    D

    The PFE receives hardware and environmental status messages from the RE


    正确答案: C
    解析: 暂无解析

  • 第22题:

    单选题
    A packet is evaluated against three user-defined terms within a firewall filter and no match is found. What correctly describes the action the firewall filter will take for this packet?()
    A

    The filter will permit the packet and take no additional action

    B

    The filter will reject the packet and send an ICMP message back to the sender

    C

    The filter will discard the packet and take no additional action

    D

    The filter will permit the packet and write a log entry to the firewall log


    正确答案: B
    解析: 暂无解析

  • 第23题:

    单选题
    A stateless firewall requires a technician to:()
    A

    Write more packet filters.

    B

    Write less packet filters.

    C

    Purchase a license for states.

    D

    Upgrade definitions manually


    正确答案: C
    解析: 暂无解析

  • 第24题:

    单选题
    Which statement about active and passive surveys is incorrect?()
    A

    Active mode does not require the client to be specifically confgured

    B

    Passive mode can survey more than one access point at a time

    C

    Active mode yields signal-quality information such as packet retries and lost packets

    D

    Active mode requires more time to survey but yields more information results than passive mode does


    正确答案: B
    解析: 暂无解析