|
|
发表于 2019-11-30 20:15:17
|
显示全部楼层
27题答案不对. 我当时选的C.
0 w( [* K4 D' N- `' phttps://www.cisco.com/c/en/us/td ... 50xcg/swmacsec.html
7 ` g5 |$ v# l/ HUnderstanding Media Access Control Security and MACsec Key Agreement
9 j2 d( b1 I5 X, P Z9 R# F0 [MACsec, defined in 802.1AE, provides MAC-layer encryption over wired networks by using out-of-band methods for encryption keying. The MACsec Key Agreement (MKA) Protocol provides the required session keys and manages the required encryption keys. MKA and MACsec are implemented after successful authentication using the 802.1x Extensible Authentication Protocol (EAP) framework. Only host facing links (links between network access devices and endpoint devices such as a PC or IP phone) can be secured using MACsec.* r" ^5 p! t$ u K' } z
3 V6 ~5 Y% r" M& F8 A有心思的可以参考下面的内容自己分析下:
5 U# M0 J& c; I6 u6 r! qWhen the switch receives frames from the client, it decrypts them and calculates the correct ICV by using session keys provided by MKA.) \& A0 u! U1 R* b# f
/ H/ ]# Q7 ~9 Ehttps://www.cisco.com/c/en/us/td ... 50xcg/swmacsec.html8 B" J, {( b" [& z- U2 D6 I* ]& J
X8 }6 D4 z6 k7 r6 x5 C8 j6 Z! w4 G+ @& k* }( d+ v
MACsec is the IEEE 802.1AE standard for authenticating and encrypting packets between two MACsec-capable devices. The Catalyst 4500 series switch supports 802.1AE encryption with MACsec Key Agreement (MKA) on downlink ports for encryption between the switch and host devices.' C7 m( \1 f! S, }( e2 k" |# b! f
7 X, M7 K& V8 W2 Mhttps://www.cisco.com/c/en/us/td ... onfig/swmacsec.html8 U! Q% Z0 h9 r$ ^
|
10#
2019-11-30 20:15:17
回复(0)
收起回复
|
简体中文
英语
日语
韩语
法语
西班牙语
越南语
泰语
阿拉伯语
俄语
葡萄牙语
德语
意大利语
希腊语
荷兰语
波兰语
保加利亚语
爱沙尼亚语
丹麦语
芬兰语
捷克语
罗马尼亚语
斯洛文尼亚语
瑞典语
匈牙利语
繁体中文
文言文
置顶卡
喧嚣卡
变色卡
千斤顶
成长值: 37555
这套题库覆盖率怎么样？
楼主