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MAC地址的前24位叫什么？（）

A. NIC
B. BIA
C. OUI
D. VAI

As witch is configured as a vtp sever with a domain name of CCNA.Which cisco ios privileged mode command，followed by a reload of the swith，will reset the VTP management domain name of the switch to a NULL value？（）

A.#vtp domain unset
B.#delete vlan.dat
C.#no vtp domain
D.#vtp domain null

The Testking router is running RIP as the routing protocol, and the IP routing table is displayed below:Gateway of last resort is 10.1.2.2 to network 0.0.0.010.0.0.0/24 is subnetted, 2 subnetsR 10.1.3.0 [120/1] via 10.1.2.2, 00:00:00, Serial0/0C 10.1.2.0 is directly connected, Serial0/0C 10.1.5.0 is directly connected, Serial0/1C 10.1.6.0 is directly connected, FastEthernet0/0R* 0.0.0.0/0 [120/1] via 10.1.5.5, 00:00:00, Serial0/1Based on the output above, if an administrator pings host 10.1.8.5 from host10.1.6.100, how will the router TestkingA process the ICMP packets?（）

A. The packets will be discarded.
B. The packets will be routed out the S0/0 interface.
C. The packets will be routed out the S0/1 interface.
D. The packets will be routed out the Fa0/0 interface.
E. The packets will be routed through the 10.1.2.2 gateway.

單項選擇題

How would you express the binary number: 10101010 in its decimal and hexadecimal forms?（）

A. Decimal=160, hexadecimal=00
B. Decimal=170, hexadecimal=AA
C. Decimal=180, hexadecimal=BB
D. Decimal=190, hexadecimal=CC

多項選擇題

What are three IPv6 transition mechanisms?（）

A. 6to4 tunneling
B. VPN tunneling
C. GRE tunneling
D. ISATAP tunneling
E. PPP tunneling
F. Teredo tunneling

單項選擇題

Which dose the frame-relay interface-dlci command configure?（）

A. remote DLCI on the main interface
B. local DLCI on the main interface
C. local DLCI on the subinterface
D. remote DLCI on the subinterface

單項選擇題

While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?（）

A. The data link layer
B. The application layer
C. The access layer
D. The session layer
E. The network layer

單項選擇題

如果交換機的vty線路配置有 transport input ssh 命令，則在該交換機上輸入 crypto key zeroize rsa 命令后會發(fā)生什么情況？（）

A.會創(chuàng)建一個新的 RSA 密鑰對。
B.交換機默認為僅允許 Telnet 連接。
C.交換機不再能作為 SSH 客戶端進行 SSH 連接。
D.交換機僅在生成新的 RSA 密鑰對后允許遠程連接。

判斷題

IEEE802.3U是快速以太網(wǎng)交換機的標準。

答案：正確

多項選擇題

在OSI數(shù)據(jù)封裝過程中，以下哪項步驟描述正確？（）

A.傳輸層把一個數(shù)據(jù)流分成段，并可以增加可靠性和流控制信息。
B.數(shù)據(jù)鏈路層增加物理源和目的地地址以及一個FCS字段。
C.當網(wǎng)絡層封裝源和目的地主機的地址和協(xié)議相關的控制信息的幀分組被創(chuàng)建。
D.當網(wǎng)絡層增加了第3層的地址和控制信息，以一個段分組被創(chuàng)建。
E.表示層轉(zhuǎn)換位成電壓為通過物理鏈路傳輸。

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CCNA系列認證章節(jié)練習(2020.02.06)

MAC地址的前24位叫什么？（）

As witch is configured as a vtp sever with a domain name of CCNA.Which cisco ios privileged mode command，followed by a reload of the swith，will reset the VTP management domain name of the switch to a NULL value？（）

How would you express the binary number: 10101010 in its decimal and hexadecimal forms?（）

What are three IPv6 transition mechanisms?（）

Which dose the frame-relay interface-dlci command configure?（）

While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?（）

如果交換機的vty線路配置有 transport input ssh 命令，則在該交換機上輸入 crypto key zeroize rsa 命令后會發(fā)生什么情況？（）

IEEE802.3U是快速以太網(wǎng)交換機的標準。

在OSI數(shù)據(jù)封裝過程中，以下哪項步驟描述正確？（）

CCNA系列認證章節(jié)練習(2020.02.06)

MAC地址的前24位叫什么？（）

As witch is configured as a vtp sever with a domain name of CCNA.Which cisco ios privileged mode command，followed by a reload of the swith，will reset the VTP management domain name of the switch to a NULL value？（）

How would you express the binary number: 10101010 in its decimal and hexadecimal forms?（）

What are three IPv6 transition mechanisms?（）

Which dose the frame-relay interface-dlci command configure?（）

While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?（）

如果交換機的vty線路配置有 transport input ssh 命令，則在該交換機上輸入 crypto key zeroize rsa 命令后會發(fā)生什么情況？（）

IEEE802.3U是快速以太網(wǎng)交換機的標準。

在OSI數(shù)據(jù)封裝過程中，以下哪項步驟描述正確？（）

As witch is configured as a vtp sever with a domain name of CCNA.Which cisco ios privileged mode command，followed by a reload of the swith，will reset the VTP management domain name of the switch to a NULL value？（）

如果交換機的vty線路配置有 transport input ssh 命令，則在該交換機上輸入 crypto key zeroize rsa 命令后會發(fā)生什么情況？（）

在OSI數(shù)據(jù)封裝過程中，以下哪項步驟描述正確？（）