How I Prepared Cisco Certified Entry Networking Technician 100-105 Cisco Exam In One Week?

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Question: 1

Which three statements are true about the operation of a full-duplex Ethernet network? (Choose

three.)

A. There are no collisions in full-duplex mode.

B. A dedicated switch port is required for each full-duplex node.

C. Ethernet hub ports are preconfigured for full-duplex mode.

D. In a full-duplex environment, the host network card must check for the availability of the network

media before transmitting.

E. The host network card and the switch port must be capable of operating in full-duplex mode.

Answer: A, B, E

Question: 2

Which OSI layer header contains the address of a destination host that is on another network?

A. application

B. session

C. transport

D. network

E. data link

F. physical

Answer: D

Explanation:

Only network address contains this information. To transmit the packets the sender uses network

address and datalink address. But the layer 2 address represents just the address of the next hop

device on the way to the sender. It is changed on each hop. Network address remains the same.

Question: 3

Which layer of the TCP/IP stack combines the OSI model physical and data link layers?

A. Internet layer

B. transport layer

C. application layer

D. network access layer

Answer: D

Explanation:

The Internet Protocol Suite, TCP/IP, is a suite of protocols used for communication over the internet.

The TCP/ IP model was created after the OSI 7 layer model for two major reasons. First, the

foundation of the Internet was built using the TCP/IP suite and through the spread of the World Wide

Web and Internet, TCP/IP has been preferred. Second, a project researched by the Department of

Defense (DOD) consisted of creating the TCP/IP protocols. The DOD's goal was to bring international

standards which could not be met by the OSI model.

Since the DOD was the largest software consumer and they preferred the TCP/IP suite, most vendors

used this model rather than the OSI. Below is a side by side comparison of the TCP/IP and OSI

models.

Question: 4

Which layer of the OSI model controls the reliability of communications between network devices

using flow control, sequencing and acknowledgments?

A. Physical

B. Data-link

C. Transport

D. Network

Answer: C