Killtest E20-670 practice questions are worked out by our certified IT professionals and experienced experts, which can help you pass your exam easily and safely. Show some questions and answers of Killtest E20-670 exam:

Which layer of the OSI model does FTP use?
A. Application
B. Data link
C. Network
D. Transport
Answer: A
What are four layers in the ARPA (TCP/IP) architecture?
A. Application, session, transport, and physical
B. Application, transport, network, and network interface
C. Presentation, network, data link, and network interface
D. Presentation, transport, data link, and physical
Answer: B
Which port number is used to communicate to an SMTP server?
A. 20 or 21
B. 22
C. 25
D. 321
Answer: C

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