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Free PDF Quiz Unparalleled GB0-392 - Reliable H3CSE-RS-NSO Exam Topics

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H3CSE-RS-NSO Sample Questions (Q454-Q459):

NEW QUESTION # 454
下列关于 LR 的说法不正确的是

A. 是一种主动的流量调节措施,限制了从一个端口发往下边报文的总速率
B. 对非 IP 报文不能生效
C. 位于网络盘,对从该接口外出的所有报文均能生效
D. 使用令牌桶算法对流量进行测量,将超出承诺速率的报文重新送入队列进行缓存,减少了整体丢包率,平滑了流量,引入了额外的延迟

Answer: B,C

NEW QUESTION # 455
对于畸形报文防御说法正确的有。

A. 畸形报文攻击需要对每一种攻击进行针对性防御
B. 针对 ping of death 攻击,可以通过检测 Ping 请求报文的长度是否超过 65536 字节来辨别是否为攻击报文,若长度超过 65536 字节,则直接丢弃该报文
C. 针对畸形 TCP 报文攻击,可以通过判断 TCP 报文标志位来判断报文是否为攻击报文,对于 6 个标志位全为 1 或 6 个标志位全为 0 或 SN 和 FIN 为同时为 1 的报文直接丢弃
D. 针对 Teardrop 类的攻击,可以通过缓存分片信息,每一个源、目的 IP 、报文 ID 相同的构成一组,最大缓存 10000 组,在缓存数据达到最大时,直接丢弃分片,同时根据缓存的分片信息,分析 IP 报文分段的合法性,直接丢弃不合法的 IP 报文的方式来抵御攻击

Answer: A,B,C,D

NEW QUESTION # 456
SIP UA 通过重定向服务器呼叫被叫的过程中,

A. 以上都不对
B. 除了位置请求消息外,主叫 UA 的其它消息都不需要通过重定向服务器转发
C. 主叫 UA 所有消息都通过重定向服务器进行转发
D. 重定服务器帮助获取被叫 UA 位置后,主叫 UA 直接向被叫 UA 发起呼叫

Answer: B,D

NEW QUESTION # 457
在 Router1 和 RouLer3 之间创建 GRE 隧道,三台路由器配置命令分别为:
Router1 :
[Router1] interface Serial 0/2/0
[Router1-Serial0/2/0] ip address 10.1.1.1 24
ERouter1] interface loopback 0
[Router1-LoopBackO] ip address 1.1.1.1 32
[Router1] interface Tunnel 0
[Router1-Tunnel0] source 10.1.1.1
[Router1-Tunnel0] destination 20.1.1.2
[Router1-TunnelO] ip address 100.1.1.1 24
[Router1] ospf
[Router1-ospf-1] area 0
[Router1-ospf-1-area-0.0.0.0] network 10.1.1.1 0.0.0.255
[Router1] ip route-static 3.3.3.3 32 100.1.1.2
Router2 :
[Router2] interface Serial 0/2/0
[Router2-Serial0/2/0] ip address 10.1.1.2 24
[Router2] interface Serial 0/2/1
[Router2-Serial0/2/0] ip address 20.1.1.1 24
[Router2] ospf
IRouter1-ospf-1] area 0
[Router1-ospf-1-area-0.0.0.0] network 10.1.1.2 0.0.0.255
[Router1-ospf-1-area-0.0.0.0] network 20.1.1.1 0.0.0.255
Router3 :
[Router3] interface Serial 0/2/0
[Router3-Serial0/2/O] ip address 20.1.1.2 24
[Router3] interface loopback 0
[Router3-LoopBackO] ip address 3.3.3.3 32
[Router3] interface Tunnel 0
[Router3-TunnelO] source 20.1.1.2
[Router3-TunnelO] destination 1 0.1.1.1
[Router3-TunnelO] ip address 100.1.1.2
[Router3] ospf
[Router3-ospf-l] area 0
[Router3-ospf-l-area-0.0.0.0] network 20.1.1.2 0.0.0.255
[Router3] ip route-static l.1.1.1 32 100.1.1.1
在 Router1 上使用命令 ping-a 1.1.1.1 3.3.3.3 ,检查连通性, 100% 收到 ICMP 回包。
上述过程中,以下对各路由器对数据包的处理过程的描述,正确的是。（选择一项或多项)

A. Router3 进行 ICMP Echo Reply 报文 GRE 封装
B. Router2 进行 IP 数据包转发
C. Router1 进行 ICMP Echo Request 报文 GRE 封装
D. Router2 进行 ICMP Echo Request 报文 GRE 解封装

Answer: A,B,C

NEW QUESTION # 458
在 BGP MPLS VPN 的组网中, P 设备需要支持下列哪些功能 ?

A. RD
B. RT
C. 私网 MPLS 标签
D. 公网 MPLS 标签

Answer: A,B,C,D

NEW QUESTION # 459
......

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