單項選擇題A company has a small network,consisting of a single switch and a single router. The switch has been configured with two vlans,and route-on-a-stick is being configured on the router for inter-vlan routing. A trunk is configured to connect the switch to the router.What is the minimum number of router subinterfaces that are required for all the vlans to communicate?()

A.one
B.three
C.two
D.zero


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1.多項選擇題What can a network administrator utilize by using PPP Layer 2 encapsulation (Choose three.) ()。

A.VLAN support
B.compression
C.authentication
D.sliding windows
E.multilink support
F.quality of service

3.單項選擇題What is the effect of using the service password-encryption command?()

A.Only passwords configured after the command has been entered will beencrypted.
B.Only the enable password will be encrypted.
C.Only the enable secret password will beencrypted
D.It will encrypt the secret password and remove the enable secret password from the configuration.
E.It will encrypt all current and future passwords.

4.多項選擇題Which two are advantages of static routing when compared to dynamic routing?()

A.Security increases because only the network administrator may change the routing tables.
B.Configuration complexity decreases as network size increases.
C.Routing updates are automatically sent to neighbors.
D.Route summarization is compued automatically by the router.
E.Routing traffic load is reduced when used in stub network links.
F.An efficient algorithm is used to build routing tables,using automatic updates.
G.Routing tables adapt automatically to topology changes.

5.多項選擇題以下兩個選項是工作在OSI模型的應(yīng)用層的?()

A.ping
B.Telnet
C.FTP
D.TCP
E.IP

6.單項選擇題A router has two FastEthernet interfaces and needs to connect to four vlans in the local network.How can you accomplish this task,using the fewest physical interfaces and without decreasing networkper formance?()

A.Add two more FastEthernet interfaces.
B.Add a second router to handle the vlan traffic.
C.Use a hub to connect the four vlans with a FastEthernet interface on router.
D.Implement a router-on-a-stick configuration.

7.單項選擇題哪種類型的攻擊的特點是發(fā)大量的TCP請求連接數(shù)據(jù)包到服務(wù)器?()

A.拒絕服務(wù)
B.強制疊加
C.監(jiān)聽
D.木馬

8.單項選擇題A network administrator receives an error message while tring to configure the Ethernet interface of a router with IP address 10.24.24.24/29. which statement explains the reason for this issue?()

A.The address is abroadcast address.
B.The Ehernet interface is faulty.
C.VLSM-capable routing protocols must be enable first on the router.
D.This address is a network address.

9.多項選擇題Why do large OSPF networks use a hierarchical design?()

A.to confine network instability to single areas of the network
B.to reduce the complexity of router configuration
C.to speed up convergence
D.to lower costs by replacing router swith distribution layer switches
E.to decrease latency by increasing bandwidth
F.to reduce routing overhead

10.多項選擇題

根據(jù)下圖,WLANdiagram決定了哪兩個事實?()

A.兩個cells的overlap的區(qū)域描述了一個basic service set
B.網(wǎng)絡(luò)描述了一個extended service set
C.再每個CELL中的AP必須被配置成使用channel 1
D.為了確保連通性,重疊區(qū)域必須小于10%
E.兩個訪問點應(yīng)該被配置成工作在不同的頻道

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