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[判断题]
Source IP and destination IP of PTN device tunnel refer to loopback IP of NE, namely
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更多“Source IP and destination IP o…”相关的问题
（37）
A．hosts
B．lmhosts
C．networks
D．dnsfile
（38）
A．192.168.0.1 gateway
B．224.0.0.0 multicast
C．0.0.0.0 source
D．127.0.0.1 localhost
请参照图5-1，在路由器上完成销售部网段NAT的部分配置。
……
Router(config)ip nat pool xiaoshou 61.246.100.99 61.246.100.99 netmask(7)
!设置地址池
!
Router(config)access-list 2 permit(8)(9)
!定义访问控制列表
!
Router(config)ip nat inside source list 2 pool xiaoshou
!使用访问控制列表完成地址映射
A.numerous
B.only
C.single
D.multicast@@@SXB@@@A.within
B.out of
C.beyond
D.cover@@@SXB@@@A.different
B.unique
C.special
D.corresponding@@@SXB@@@A.reject
B.accept
C.discard
D.transmit@@@SXB@@@A.multicast
B.unicast
C.broadcast
D.multiple unicast
● 试题三
下面是某路由器的部分配置信息，解释标有下划线部分的含义，将解答填入答题纸的对应栏内。
【配置路由器信息】
Current configuration：
!
hostname router1
isdn switch-type basic－net3 第 (1) 处
!
interface Ethernet0
ip address 10．0．0．1 255．255．255．0
ip nat inside 第 (2) 处
!
interface bri0
ip address negotiated 第 (3) 处
ip nat outside
encapsulation ppp
pppauthentication pap callin 第 (4) 处
ppp multilink 第 (5) 处
dialer-group 1
dialer string 2633
ppp pap sent-username 263 password 263 第 (6) 处
ip route 0．0．0．0 0．0．0．0 bri 0
access-list 2 permit any 第 (7) 处
dialer-list 1 protocol ip permit 第 (8) 处
ip nat inside source list 2 interface bri 0 overload 第 (9) 处
…
End
The network layer provides services to the transport layer．It can be based on either (1)．In both cases，its main job is (2) packets from the source to the destination．
In network layer，subnets can easily become congested，increasing the delay and (3).
for packets．Network designers attempt to avoid congestion by proper design．Techniques include (4) policy，caching，flowcontrol，and more．
The next step beyond just dealing with congestion is to actually try to achieve a promised quality of service．The methods that can be used for this include buffering at the client，traffic shaping，resource (5)，and admission control．Approaches that have been designed for good quality of service include integrated services(including RSVP) ，differentiated services， and MPLS．
(1)
A．virtual circuits or datagrams
B．TCP or UDP
C．TCP or IP
D．IP or ARP
● A glue that holds the whole Internet together is the network layer protocol,(71). Unlike most older network layer protocols, it was designed from the beginning with internetworking in mind. Its job is to provide a -(72) way to transport datagrams from source to destination, without regard to whether these machines are on the same network or whether there are other networks in between them.
Communication in the Internet works as follows. The (73)layer takes data streams and breaks them up into datagrams. Each datagram is transmitted through the Internet, possibly being fragmented into smaller units as it goes. When all the pieces finally get to the destination machine, they are reassembled by the
(74) layer into the original datagram. This datagram is then handed to the transport layer, which inserts it into the receiving process' input stream.
An IP datagram consists of a header part and a text part. The header has a (75) part and a variable length optional part.
(71) A. IP (Internet Protocol)
B. IP (Interworking Protocol)
C. TCP (Transport Control Protocol)
D. TCP (Transfer Communication Protocol)
(72) A. best-quality
B. quality-guaranteed
C. connection-oriented
D. best-efforts
(73) A. data link
B. transport
C. network
D. application
(74) A. data link
B. transport
C. network
D. application
(75) A. 40-byte fixed
B. 64-byte fixed
C. 20~64 bytes variable
D. 20-byte fixed
为保证路由器的安全，网络管理员做了如下设置，请阅读下列三段路由配置信息，并在(1)～(3)处填写该段语句的作用。
1．Router(Config)no ip http server (1)
2．Router(Config)snmp—server community admiIl RW
3．Router(Config)access—list 1 permit 192．168．5．1
Router(Config)line con 0
Router(Config—line)transport input none
Router(Config—line)10gin local
Router(Config—line)exec—timeout 5 0
Router(Config—line)access—class 1 in (2)
请参照图1—1，在路由器上完成销售部网段NAT的部分配置。
Router(config)ip nat pool xiaoshou 61．246．100．99 61．246．100．99 netmask (3)
!设置地址池
!
Router(config)access—list 2 permit (4) (5)
!定义访问控制列表
!
Router(config)ip nat inside source list 2 pool xiaoshou
!使用访问控制列表完成地址映射
阅读以下说明，回答问题1至问题2，将解答填入答题纸对应的解答栏内。 【说明】 图4-1为某学校网络拓扑图，运营商分配的公网IP地址为113.201.60.1/29，运营商网关地址为113.201.60.1，内部用户通过路由器代理上网，代理地址为113.201.60.2.核心交换机配置基于全局的DHCP服务，在办公楼和宿舍楼用户提供DHCP服务。内部网络划分为3个VLAN,其中VLAN10的地址10.0.10.1/24，VLAN20的地址10.0.20.1/24，VLAN30的地址10.0.30.1/24，请结合下图，回答相关问题。
【问题1】（共9分） 路由器的配置片段如下，根据图4- 1，补齐(1) ~(6) 空缺的命令。 配置 WAN 接口和内网上网代理 ＜Huawei＞system-view [Huawei] sysname（） [Router] interface（） [Router-GigabitEthernet1/0/0] ip address（） [Router-GigabitEthernet1/0/0] quit [Router] ip route-static 0.0.0.0 0.0.0（） [Router-acI-basic-2000] [Router-acI-basic-2000] rule 5 permit source 10.0.0（） [Router-acl-basic-2000] quit [Router] interface GigabitEthernet1/0/0 [Router-GigabitEthernet1/0/0] nat outbound（） [Router-GigabitEthernet1/0/0] quit …… 其他配置略 【问题 2】（共 6 分） 核心交换机的配置片段如下，根据图 4-1，补齐 (7)~(10) 空缺的命令。 配置GEO/0/2接口加入VLAN20，并配置对应VLAN接口地址 [Switch]vlanbatch20 [Switch]inlterface GigabitEthernet0/0/2 [Switch-GigabitEthernet0/0/2]port link-type() [Switch-GigabitEthernet0/0/2]port hybrid pvid vlan20 [Switch-GigabitEthernet0/0/2]port hybrid untagged vlan20 [Switch-GigabitEthernet0/0/2]quit [Switch] interface vlanif 20 [Switch-Vlanif20] ip address() [Switch-Vlanif20] quit ....... 其他配置略 配置DHCP服务，租期3天 [Switch] dhcp() [Switch] ip pool pooll [Switch-ip-pool-pooll] network 10.0.20.0 mask 225.225.255.0 [Switch-ip-pool-pooll] dns-list 10.0.10.2 [Switch-ip-pool-pooll] gateway-list 10.0.20.1 [Switch-ip-pool-pooll] lesae day() [Switch-ip-pool-pooll] quit [Switch] interface vlanif 20 [Switch-Vlanif20] dhcp select global [Switch-Vlanif20] quit ...... 其他配置略
在表单中为表格控件指定数据源的属性是（）。
A.Data Source
B.Data From
C.Record Source
D.Reeord Source Type
