F50-522V5.15试题解答说明2
Q: 1 Which three statements are true about SNA Ts? (Choose three.)
A. SNATs provide bi-directional traffic initiation.
B. SNATs support UDP, TCP, and ICMP traffic.
C. SNATs provide a many-to-one mapping between IP addresses.
D. SNAT addresses can be identical to virtual server IP addresses.
Answer: B, C, D
翻译：
试题1 哪三个称述正确关于SNA Ts？（选择3个）
A．SNATs规定双向传输启动
B．SNATs支持UDP、TCP和ICMP传输
C．SNATs规定在ip地址之间多对一映射
D．SNATs地址可能和虚拟服务器ip地址相同
解题分析：
源地址转换支持UDP、TCP、ICMP协议，是多对一ip地址映射等
因此选a、c、d
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Q: 2 A BIG-IP has two SNATs, a pool of DNS servers and a virtual server configured to load-balance UDP traffic to the DNS servers. One SNAT's address is 64.100.130.10; this SNAT is defined for all addresses. The second SNA T's address is 64.100.130.20; this SNAT is defined for three specific addresses, 172.16.3.54, 172.16.3.55, and 172.16.3.56. The virtual server's destination is 64.100.130.30:53. The SNA Ts and virtual server have default VLAN associations.
If a client with IP address 172.16.3.55 initiates a request to the virtual server, what is the source IP address of the packet as it reaches the chosen DNS server?
A. 64.100.130.10
B. 64.100.130.20
C. 64.100.130.30
D. 172.16.3.55
Answer: B
翻译：
试题2 一个bip-ip设备有2个SNATs，一个DNS服务器池和一个虚拟服务器被DNS服务器UDP传输的配置。一个SNATs的地址是64.100.130.10；这个SNAT被所有IP地址定义。第二个SNAT地址是64.100.130.20；这个SNAT被三个专用地址定义，172.16.3.54, 172.16.3.55, and 172.16.3.56。虚拟服务器目标地址为：64.100.130.30:53。SNATs和虚拟服务器有默认
VLAN关联。如果一个IP地址为172.16.3.55的客户端开始请求到虚拟服务器，他忙于选择DNS服务器的数据包的源IP地址是？
A. 64.100.130.10
B. 64.100.130.20
C. 64.100.130.30
D. 172.16.3.55
解题分析：
客户端的ip地址为172.16.3.55是第二个SNAT地址为自动映射的，因此源ip地址为第二个SNAT的ip地址：64.100.130.20
因此选B
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Q: 3 Which persistence method will always recognize a client when the client returns to the same virtual server?
A. SSL
B. MSRDP
C. source address
D. expression (universal)
E. No persistence method works in all situations.
Answer: E
翻译：
试题3 那一个保持模式将总是被一个客户端识别，当客户端回到相同的虚拟服务器？
A. SSL
B. MSRDP
C. 源地址
D. 表达式(通用的)
confE. 没有保持模式工作在所有情况
解题分析：
会话保持只是在一定的情况下才能保持，没有在所有情况下保持会话的方法
因此选E
Q: 4 Which three files/data items are included in a BIG-IP backup file? (Choose three.)
A. the BIG-IP license
B. the BIG-IP log files
C. the BIG-IP host name
D. the BIG-IP default traps
E. the BIG-IP administrative addresses
Answer: A, C, E
翻译：
试题4 哪三个文件或数据项包括在bip-ip备份文件中？（选3个）
A．big-ip 许可信息
B．b ig-ip 日志文件
C．b ig-ip 主机名称
D．big-ip 默认设置
E．big-ip 管理地址
许可信息、主机名以及管理地址备份在big-ip备份文件中
因此选A、C、E
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Q: 5 Which statement is true regarding OneConnect processing?
A. The virtual server must have a UDP profile.
B. The number of client connections is reduced.
C. Server-side requests can utilize existing client-side connections.
D. Client-side requests can utilize existing server-side connections.
Answer: D
翻译：
试题5 那个称述是正确的关于oneconnect 处理？
A．虚拟服务器必须有udp 属性
B．客户端连接数被减少
C．服务器请求能利用现有的客户端连接
D．客户端请求能利用现有服务器的连接
解题分析：
Oneconnect 是减少三次握手，客户端里用服务器建立好的连接通道，直接通信
因此选D
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Q: 6 Click the Exhibit button. An LTM has the 3 virtual servers, four self IP addresses defined and the networks shown in the exhibit.Selected options for each object are shown below. Settings not shown are at their defaults.VirtualServer1 Destination: 10.10.2.102:443 netmask 255.255.255.255 Pool: Pool with 3 members in the 172.16/16 network VirtualServer2 Destination: 10.10.2.102:* netmask 255.255.255.255 Pool: Pool with 3 mem
bers in the 192.168/16 network VirtualServer3 Destination: 10.10.2.0:80 netmask 255.255.255.0 Type: IP Forwarding SNAT1 Source IP: All Addresses SNAT Address: SNAT Pool with 2 members - 172.16.20.50 and 192.168.10.50 Self IPs 192.168.1.1; 172.16.1.1; 10.10.2.1; 10.10.1.1

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