网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
How doTCP SYN attacks take advantage ofTCPto prevent new connections from being established to a host under attack?()
- A、These attacks send multiple FIN segments forcing TCP connection release.
- B、These attacks fill up a hosts’ listen queue by failing to ACK partially openedTCPconnections.
- C、These attacks take advantage of the hosts transmit backoff algorithm by sending jam signals to the host.
- D、These attacks increment the ISN of each segment by a random number causing constant TCP retransmissions.
- E、These attacks send TCP RST segments in response toconnection SYN+ACK segments forcing SYN retransmissions.
参考答案
更多 “How doTCP SYN attacks take advantage ofTCPto prevent new connections from being established to a host under attack?()A、These attacks send multiple FIN segments forcing TCP connection release.B、These attacks fill up a hosts’ listen queue by failing to ACK partially openedTCPconnections.C、These attacks take advantage of the hosts transmit backoff algorithm by sending jam signals to the host.D、These attacks increment the ISN of each segment by a random number causing constant TCP retransmissions.E、These attacks send TCP RST segments in response toconnection SYN+ACK segments forcing SYN retransmissions.” 相关考题
考题
在C/S环境中,以下哪个是建立一个完整TCP连接的正确顺序()。A.SYN,SYN/ACK,ACKB.PassiveOpen,ActiveOpen,ACK,ACKC.SYN,ACK/SYN,ACKD.ActiveOpen/PassiveOpen,ACK,ACK
考题
Which parameters are valid SCREEN options for combating operating system probes?()
A. syn-fin, syn-flood, and tcp-no-fragB. syn-fin, port-scan, and tcp-no-flagC. syn-fin, fin-no-ack, and tcp-no-fragD. syn-fin, syn-ack-ack-proxy, and tcp-no-frag
考题
Which parameters must you select when configuring operating system probes SCREEN options?()
A. syn-fin, syn-flood, and tcp-no-fragB. syn-fin, port-scan, and tcp-no-flagC. syn-fin, fin-no-ack, and tcp-no-fragD. syn-fin, syn-ack-ack-proxy, and tcp-no-frag
考题
主机甲向主机乙发送了一个TCP连接建立请求,主机乙给主机甲的响应报文中,标志字段正确的是( )。A. SYN=1,ACK=1,FIN=0B. SYN=1,ACK=1,FIN=1C. SYN=0,ACK=1,FIN=0D. SYN=1,ACK=0,FIN=0
考题
TCP端口全扫描方式,扫描、被扫描端口(开放)间的会话过程()。
A.SYN-SYN+ACK-ACK-ACK+FINB.SYN-SYN+ACK-RSTC.SYN-ACK+RSTD.SYN-SYN+ACK-ACK+FIN
考题
TCP会话通过3次握手来建立连接。其中第一次握手:源主机发送一个同步标志位SYN=1的TCP数据段。源主机进入SYN-SENT状态。第二次握手:目标主机接收到SYN包后发回确认数据报文。该数据报文ACK=1。此时目标主机进入(SYN-RCVD)状态,源主机进入( )状态。A.SYN-SENT
B.SYN-RCVD
C.ESTABLISHED
D.CLOSE-WAIT
考题
TCP会话通过( )次握手来建立连接。其中第一次握手:源主机发送一个同步标志位SYN=( )的TCP数据段。源主机进入( )状态。A.SYN-SENT
B.SYN-RCVD
C.ESTABLISHED
D.CLOSE-WAIT
考题
TCP/IP的通信过程是?()A、——SYN/ACK——,——ACK,——SYN/ACK——B、——SYN/ACK——,——SYN/ACK——,——ACK——C、——SYN——,——ACK,——SYN——,——ACK——D、——SYN——,——SYN/ACK——,——ACK——
考题
What is true about SYN cookies?()A、 All TCPoptions are supported, such as largewindows.B、 The server can have more than8 unique MSS values.C、 SYN cookies are not implemented as a method of defending against SYN floods.D、 SYN cookies are implemented as a method of defending against SYN floods.
考题
Which parameters are valid SCREEN options for combating operating system probes?()A、syn-fin, syn-flood, and tcp-no-fragB、syn-fin, port-scan, and tcp-no-flagC、syn-fin, fin-no-ack, and tcp-no-fragD、syn-fin, syn-ack-ack-proxy, and tcp-no-frag
考题
在C/S环境中,以下哪个是建立一个完整TCP连接的正确顺序?()A、SYN,SYN/ACK,ACKB、PassiveOpen,ActiveOpen,ACK,ACKC、SYN,ACK/SYN,ACKD、ActiveOpen/PassiveOpen,ACK,ACK
考题
以下关于SecPath防火墙syn-Flood攻击防御技术,描述正确的是()。A、基于TCP半开连接数限制方法防范SYN Flood攻击B、基于TCP新建连接速率限制方法防范SYN Flood攻击C、利用SYN Cookie技术防范SYN Flood攻击D、通过利用Safe Reset技术防范SYN Flood攻击
考题
TCP端口全扫描方式,扫描、被扫描端口(开放)间的会话过程()。A、SYN-SYN+ACK-ACK-ACK+FINB、SYN-SYN+ACK-RSTC、SYN-ACK+RSTD、SYN-SYN+ACK-ACK+FIN
考题
单选题What is true about SYN cookies?()A
All TCPoptions are supported, such as largewindows.B
The server can have more than8 unique MSS values.C
SYN cookies are not implemented as a method of defending against SYN floods.D
SYN cookies are implemented as a method of defending against SYN floods.
考题
单选题主机甲向主机乙发送一个(SYN=1,seq=11220)的TCP段,期望与主机乙建立TCP连接,若主机乙接受该连接请求,则主机乙向主机甲发送的正确的TCP段可能是( )。A
(SYN=0,ACK=0,seq=11221,ack=11221)B
(SYN=1,ACK=1,seq=11220,ack=11220)C
(SYN=1,ACK=1,seq=11221,ack=11221)D
(SYN=0,ACK=0,seq=11220,ack=11220)
考题
单选题TCP端口全扫描方式,扫描、被扫描端口(开放)间的会话过程()。A
SYN-SYN+ACK-ACK-ACK+FINB
SYN-SYN+ACK-RSTC
SYN-ACK+RSTD
SYN-SYN+ACK-ACK+FIN
考题
单选题How doTCP SYN attacks take advantage ofTCPto prevent new connections from being established to a host under attack?()A
These attacks send multiple FIN segments forcing TCP connection release.B
These attacks fill up a hosts’ listen queue by failing to ACK partially openedTCPconnections.C
These attacks take advantage of the hosts transmit backoff algorithm by sending jam signals to the host.D
These attacks increment the ISN of each segment by a random number causing constant TCP retransmissions.E
These attacks send TCP RST segments in response toconnection SYN+ACK segments forcing SYN retransmissions.
考题
单选题下面哪项不是SYN攻击保护方法()。A
saferesetB
syn cookie/syn proxyC
syn重传D
ICMP Filter
热门标签
最新试卷