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单选题
An internet is a combination of networks connected by (1). When a datagram goes from a source to a (2), it will probably pass many (3) until it reaches the router attached to the destination network. A router receives a (4) from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5) is the optimum pathway?
空白（4）处应选择（）
A
destination
B
resource
C
packet
D
source
参考答案
参考解析
解析：
互联网是由不同的网络通过路由器互联起来的。当数据包从源地发往目的地时，在到达目的地网络之前它可能经过多个路由器。路由器从一个网络接收到数据包之后就转发到另外一个网络。然而，一个路由器往往与几个网络连接，当路由器接收到一个数据时，它应该将数据包传向哪个网络呢？这将基于路径最优化决策。
更多 “单选题An internet is a combination of networks connected by (1). When a datagram goes from a source to a (2), it will probably pass many (3) until it reaches the router attached to the destination network. A router receives a (4) from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5) is the optimum pathway? 空白（4）处应选择（）A destinationB resourceC packetD source” 相关考题
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B.relays
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A host is to be part of a very small private network， which will never be connected to any other networks. Which of the following name resolution schemes would be the easiest to implement？（）A、DNSB、NISC、DHCPD、etc/hosts file
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You have a server that runs Windows Server 2003 Service Pack 2 (SP2). The server is configured as a network address translation (NAT) router. The server has two network adapters and provides Internet access for the network.You need to prevent traffic on port 21 from being sent to the Internet. All other outbound traffic must be allowed.What should you do?（） A、On the network adapter that is connected to the LAN, enable TCP/IP filtering. B、On the network adapter that is connected to the Internet, enable TCP/IP filtering. C、From the Routing and Remote Access snap-in, open the properties of the interface connected to the Internet, select the Services and Ports tab, and define a new service. D、From the Routing and Remote Access snap-in, open the properties of the interface connected to the Internet, select the NAT/Basic Firewall tab, and define a new static packet filter.
考题
单选题When implementing OSPFv3, which statement describes the configuration of OSPF areas?（）A
In interface configuration mode, the OSPFv3 area ID combination assigns interfaces to OSPFv3 areas.B
In router configuration mode, the network wildcard area ID combination assigns networks to OSPFv3 areas.C
In interface configuration mode, the IPv6 OSPF process area ID combination assigns interfaces to OSPFv3 areas.D
In router configuration mode, the IPv6 OSPF interface area ID combination assigns interfaces to OSPFv3 areas.
考题
单选题The Internet is a （）system of interconnected computer networks that use thestandard Internet protocol suite (TCP/IP) to serve several billion users worldwide.A
globalB
regionalC
localD
national
考题
单选题An internet is a combination of networks connected by (1). When a datagram goes from a source to a (2), it will probably pass many (3) until it reaches the router attached to the destination network. A router receives a (4) from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5) is the optimum pathway?
空白（1）处应选择（）A
modemsB
routersC
switcherD
computers
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PPPoAB
Route Bridge Encapsulation（RBE）C
PPPoE clientD
Integrated Routing and Bridging（IRB）E
AAA
考题
单选题An internet is a combination of networks connected by (1). When a datagram goes from a source to a (2), it will probably pass many (3) until it reaches the router attached to the destination network. A router receives a (4) from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5) is the optimum pathway?
空白（4）处应选择（）A
destinationB
resourceC
packetD
source
考题
单选题When using keyboard shortcuts, which keystroke combination allows users to erase a single word to the left of the cursor?（）A
Ctrl + aB
Ctrl + eC
Ctrl + uD
Ctrl + w
考题
单选题When computers are connected on a network in a manner where the data flows to a central pointand then back out describes which of the following networks?（）A
RingB
MeshC
StarD
Hybrid
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