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What command will permit SMTP mail to only host 1.1.1.1?

A. access-list 10 permit smtp host 1.1.1.1

B. access-list 110 permit ip smtp host 1.1.1.1

C. access-list 10 permit tcp any host 1.1.1.1 eq smtp

D. access-list 110 permit tcp any host 1.1.1.1 eq smtp

Answer: Option D

Solution(By Examveda Team)

When trying to find the best answer to an access-list question, always check the access-list number and then the protocol. When filtering to an upper-layer protocol, you must use an extended list, numbers 100-199 and 2000-2699. Also, when you filter to an upper-layer protocol, you must use either tcp or udp in the protocol field. If it says ip in the protocol field, you cannot filter to an upper-layer protocol. SMTP uses TCP.

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Comments ( 5 )

  1. Shahid Afridi
    Shahid Afridi :
    3 years ago

    Question 1
    1 Point
    One way to limit hostile sniffing on a LAN (Local AreaNetwork) is by installing:

  2. Shahid Afridi
    Shahid Afridi :
    3 years ago

    One way to limit hostile sniffing on a LAN (Local AreaNetwork) is by installing:

  3. Shahid Afridi
    Shahid Afridi :
    3 years ago

    One way to limit hostile sniffing on a LAN (Local AreaNetwork) is by installing:

  4. Shahid Afridi
    Shahid Afridi :
    3 years ago

    Which of these is not true ?

  5. Shahid Afridi
    Shahid Afridi :
    3 years ago

    One way to limit hostile sniffing on a LAN (Local AreaNetwork) is by installing:

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