PPP（Point-to-Point Protocol，点到点协议）是一种在同步或异步线路上对数据包进行封装的数据链路层协议，早期的家庭拨号上网主要采用SLIP协议，而现在更多的是用PPP协议。

相似题目

• Which two IPv6 address pairs can be assigned on a point-to-point link with a /125 mask？（）

  A . 2001：DB8：：1 and 2001：DB8：：2 B . 2001：DB8：：9 and 2001：DB8：：10 C . 2001：DB8：：10 and 2001：DB8：：17 D . 2001：DB8：：1 and 2001：DB8：：18

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• VPN可以在公有平台上替代专有的point-to-point链路。

  A . 正确 B . 错误

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• On point-to-point networks, OSPF hello packets are addressed to which address?（）

  A . 127.0.0.1 B . 172.16.0.1 C . 192.168.0.5 D . 223.0.0.1 E . 224.0.0.5 F . 254.255.255.255

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• When configuring Frame Relay using point-to-point subinterfaces, which of the following must not be configured?（）

  A . The local DLCI on each subinterface of the Frame Relay. B . The Frame Relay encapsulation on the physical interface. C . An IP address on the physical interface. D . The subinterface type as point-to-point

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• Which of the following statements correctly describes the characteristics of a Frame Relay point-to-point subinterface?（）

  A . Needs to use Inverse ARP. B . Maps a single IP subnet per DLCI. C . Maps a single IP subnet across multiple DLCIs. D . Resolves NBMA (non broadcast multi access) split horizon issues. E . Requires use of the frame-relay map command. F . None of the above

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• What are the header sizes for point-to-point and multi-point GRE（also known asmGRE） with tunnel key？（）

  A .  4 bytes for both B .  4 bytes， and 8 bytes respectively C .  8 bytes for both D .  24 bytes for both

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• How will EIGRPv6 react if there is an IPv6 subnet mask mismatch between the Global Unicast addresseson a point-to-point link？（）

  A . EIGRPv6 will form a neighbor relationship. B . EIGRPv6 will not form a neighbor relationship. C . EIGRPv6 will form a neighbor relationship， but with the log MSG： "EIGRPv6 neighbor not on a commonsub net." D . EIGRPv6 will form a neighbor relationship， but routes learned from that neighbor will not be installed inthe routing table.

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• Which of the following settings will reduce packet overhead and overall latency in a standalone point-to-point bridge deployment？（）

  A . enable concatenation on the non-root bridge only B . enable concatenation on the root bridge only C . enable concatenation on both the root bridge and non-root bridge D . enable concatenation on the root bridge and set it as desirable on the non-root bridge E . set concatenation as desirable on the root bridge and enable it on the non-root bridge

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• In the implementation of VLSM techniques on a network using a single Class C IP address, which subnet mask is the most efficient for point-to-point serial links（）。

  A . 255.255.255.0 B . 255.255.255.240 C . 255.255.255.248 D . 255.255.255.252 E . 255.255.255.254

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• In the implementation of VLSM techniques on a network using a single Class C IP address, which subnet  mask is the most efficient for point-to-point serial links? （）

  A . 255.255.255.0 B . 255.255.255.240 C . 255.255.255.248 D . 255.255.255.252 E . 255.255.255.254

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• You are using standalone cisco aironet 1400 series wireless bridges for a nine-mile point-to-point wireless link between two buildings. Which distance setting should you use for the bridge configured as the root？（）

  A . 20 km [12.4 miles] B . 10 km [6.2 miles] C . 5 km [3.1 miles] D . 25 km [15.5 miles] E . 15 km [9.3 miles]

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• When configuring non-IP point-to-point networks on clusters that are larger than two nodes， which Type of configuration should be defined？（）

  A .  A start B .  A ring C .  A target mode fc D .  A target mode scsi

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• In the implementation of VLSM techniques on a network using a single Class C IP address，which subnetmask is the most efficient for point-to-point serial links？（）

  A . 255.255.255.240 B . 255.255.255.254 C . 255.255.255.252 D . 255.255.255.0 E . 255.255.255.248

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• The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?（）

  A . 10.10.0.0/18 subnetted with mask 255.255.255.252 B . 10.10.0.0/25 subnetted with mask 255.255.255.252 C . 10.10.0.0/24 subnetted with mask 255.255.255.252 D . 10.10.0.0/23 subnetted with mask 255.255.255.252 E . 10.10.0.0/16 subnetted with mask 255.255.255.252

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• Which are three reasons that an organization with multiple branch offices and roaming users might implement a Cisco VPN solution instead of point-to-point WAN links？（）

  A . reduced cost B . better throughput C . increased security D . scalability E . reduced latency F . broadband incompatibility

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• What is the advantage of using a multipoint interface instead of point-to-point subinterfaces when configuring a Frame Relay hub in a hub-and-spoke topology?（）

  A . it avoids split-horizon issues with distance vector routing protocols. B . IP addresses can be conserved if VLSM is not being used for subnetting. C . A multipoint interface offers greater security compared to point-to-point subinterface configurations. D . The multiple IP network addresses required for a multipoint interface provide greater addressing flexibility over point-to-point configurations.

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• The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses？（）

  A . 10.10.0.0/18 subnetted with mask 255.255.255.252 B . 10.10.0.0/25 subnetted with mask 255.255.255.252 C . 10.10.0.0/24 subnetted with mask 255.255.255.252 D . 10.10.0.0/23 subnetted with mask 255.255.255.252 E . 10.10.0.0/16 subnetted with mask 255.255.255.252

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• You are implementing a new frame relay network to provide connectivity between you offices. To do this, you set up the frame relay network using point-to-point subinterfaces.Which of the following does NOT need to be configured?（）

  A . The Frame Relay encapsulation on the physical interface. B . The local DLCI on each subinterface. C . An IP address on the physical interface. D . The subinterface type as point-to-point.

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• 有关PPTP(Point-to-Point Tunnel Protocol)说法正确的是

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• 两台路由器RTA、RTB的串口Ｓ0用一条链路连接，链路协议位PPP，两各接口的网络类型均为point-to-point，此时接口与链路均为UP，配置该网段：RTA（config-if-serial0）ipaddress 10.10.10.1 255.255.0.0；RTA（config-router-ospf）network 10.10.10.10.0.0.0area 1；RTB（config

  A．FULL B．DOWN C．TWOWAY D．ATTEMP

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• 关于设备SWC的配置说法正确的是【SWC】STP INSTANCE 1 PRIORITY 4096 【SWC】INTERFACE ETHERNET 1/0/12 【SWC-ETHERNER 1/0/12】STP POINT-TO-POINT FORCE-TRUE 【SWC】INTERFACE ETHERNET 1/0/2 【SWC-ETHERNET1/0/2】STP EDGED-PORT ENABLE（）

  A．stp point-to-point force-true命令是用来标识与ETHERNET1/0/12相连的链路是点到点的链路 B．stp instance 1 priority 4096是配置交换机在实例1中的优先级为4096，该优先级默认为0 C．stp edged-port enable该命令是启用交换机SWC的Ethernet 1/0/2为边缘端口 D．SWC为根交换机 此题为多项选择题。

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• 如果应用层协议为Te1net，那么IPv4首部中Protoco1字段取值为（）

  A．23 B．17 C．6 D．67

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• 在一个Point-to-Point的网络中，OSPF的hello包将发往（）

  A．127.0.0.1 B．192.168.0.5 C．224.0.0.5 D．172.16.0.1

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• 根据《云南红塔银行PPP贷款业务管理办法》规定，PPP贷款指本行针对不同的PPP运营模式向社会资本和项目公司发放的贷款，以下哪些贷款类型属于PPP贷款（）

  A．O&M贷款 B．OT贷款 C．TOT贷款 D．T贷款

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