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ss.它不會使用一個二層目的地址。8. Which layer 4 protocol is used for a Telnet connection?8. 哪個4層協(xié)議用來做Telnet連接?A. IPB. TCPC. TCP/IP D. UDP 用戶數(shù)據(jù)報協(xié)議 E. ICMP 因特網(wǎng)控制信息協(xié)議9. Which statements are true regarding ICMP packets? (Choose two.)9. 關于ICMP數(shù)據(jù)包,哪些陳述是正確的?(選擇兩項。)A. They guarantee datagram delivery.它們保證數(shù)據(jù)報傳遞。B. They can provide hosts with information about network problems.它們可以為主機提供有關網(wǎng)絡問題的信息。C. They are encapsulated within IP datagrams.它們都封裝在 IP 數(shù)據(jù)報。D. They are encapsulated within UDP datagrams.它們都封裝在 UDP 數(shù)據(jù)報。10. Which of the following service use TCP? (Choose three.)10. 以下服務哪些使用TCP?(選擇三項)A. DHCPB. SMTPC. SNMPD. FTPE. HTTPF. TFTP11. Which of the following services use UDP? (Choose three.)11. 以下服務哪些使用UDP?(選擇三項)A. DHCPB. SMTPC. SNMPD. FTPE. HTTPF. TFTP12. Which of the following are TCP/IP protocols used at the