更多“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 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


    参考答案:C

  • 第2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3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4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:C

  • 第5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6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7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:A

  • 第8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9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10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 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14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15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16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17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18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19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

  • 第20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21题:

    问答题
    Practice 4Directions: For this part, you are allowed 30 minutes to write an essay commenting on the remark “Since we’re now living in a society where a good education is becoming less important for a high income, the government should not encourage people to go to college any more.” You can cite examples to illustrate your point. You should write at least 150 words but no more than 200 words.

    正确答案:
    【范文】
    The Importance of Higher Education The contemporary society has seen a trend of discordance in education. Many college students graduate only to find that they earn much less than their bosses who even have never entered colleges. However, higher education is still valuable for students.
    Most importantly, higher education is the source of expertise. Every industry in the society is built on the professional knowledge. If all the staff is poor-educated, who can we depend on to make profits? Colleges can equip students with the most useful and systematical theories. Further, the academic environment in college will provide students with a better opportunity to develop healthy bodies and hearts. What they need to do is to read more and think more for their own pursuits. Thus, they can be stronger to confront the extreme thoughts that may destroy their righteous beliefs in the future. Lastly, good friends and teachers from colleges will help students form right outlook on life and values, which will also benefit their future career.
    In summary, higher education will set students a higher start in the future career. If you can not see it now, wait and see that how the better are separated from the good.
    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