974-04

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 4-1 Lesson 4. User Part Layer P E/ TR D/ CN /U M974 1 6. 02 /E N Ja nuar y 2 00 !       C   o   n    f    i    d   e   n    t    i   a    l    i   n    f   o   r   m   a    t    i   o   n       m   a   y   n   o    t    b   e   c   o   p    i   e    d   o   r    d    i   s   c    l   o   s   e    d   w    i    t    h   o   u    t   p   e   r   m    i   s   s    i   o   n     . Lesson 4 User Part Layer 

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  • 5/18/2018 | 502: Bad gateway

    1/1

    Error 502 Ray ID: 41c7a6d416a69f42 2018-05-17 17:02:26

    UTC

    Bad gateway

    You

    Browser

    Working

    Ashburn

    Cloudflare

    Working

    Host

    Error

    What happened?

    The web server reported a bad gateway error.

    What can I do?

    Please try again in a few minutes.

    Cloudflare Ray ID: 41c7a6d416a69f42 Your IP: 2607:5300:203:be2:: Performance & security by Cloudflare

    https://www.cloudflare.com/5xx-error-landing?utm_source=error_footer