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Q:

If you use either Telnet or FTP, what layer are you using to generate the data?

A) Application	B) Presentation
C) Session	D) Transport

Answer & Explanation Answer: A) Application

Explanation:

Both FTP and Telnet use TCP at the Transport layer; however, they both are Application layer protocols, so the Application layer is the best answer for this question.

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Q:

You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?

A) SMTP	B) SNMP
C) DHCP	D) ARP

Answer & Explanation Answer: C) DHCP

Explanation:

Dynamic Host Configuration Protocol (DHCP) is used to provide IP information to hosts on your network. DHCP can provide a lot of information, but the most common is Ip address, subnet mask, default gateway, and DNS information.

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Q:

Differentiate types of Ethernet cabling and identify their proper application?

Answer

The three types of cables that can be created from an Ethernet cable are straight-through (to connect a PC's or a router's Ethernet interface to a hub or switch), crossover (to connect hub to hub , hub to switch, switch to switch, or PC to PC), and rolled (for a console conection from a PC to a router or switch).

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Subject: CCNA

Q:

Identify the fields in the Data Link portion of an Ethernet frame?

Answer

The fields in the Data Link portion of a frame include the Preamble, Start Frame Delimiter, Destination MAC address, Source MAC address, Length or Type, Data, and Frame Check Sequence.

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Subject: CCNA

Q:

Convert the following from binary format to hexadecimal

11001010.11110101.10000011.11101011

Answer

$\begin{matrix} Binary & 128& 64& 32& 16 & 8 & 4 & 2 & 1 & Hexadecimal\\ 11001010& 1 & 1& 0 & 0& 1& 0 & 1 & 0 &CA \\ 11110101& 1& 1& 1 & 1 & 0& 1 & 0 & 1 &F5 \\ 10000011& 1 & 0 & 0 & 0 & 0 &0 & 1& 1& 83\\ 11101011& 1& 1& 1& 0& 1& 0& 1& 1 & EB \end{matrix}$

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Q:

Convert the following from binary format to decimal IP address.

11001100.00110011.10101010.01010101

Answer

$\begin{matrix} Binary & 128 & 64 & 32 & 16 & 8 & 4 & 2 & 1 &Decimal \\ 11001100& 1& 1& 0& 0 & 1 & 1 & 0 & 0 & 204\\ 00110011& 0& 0& 1& 1& 0 & 0 &1 & 1 & 51\\ 10101010& 1& 0& 1 & 0 & 1 & 0& 1 & 0& 170\\ 01010101& 0& 1& 0 & 1 & 0 & 1 & 0 & 1 & 85 \end{matrix}$

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Q:

Convert the following from decimal IP address to binary format.

192.168.10.15

Answer

$\begin{matrix} Decimal & 128 & 64 & 32 & 16 & 8 & 4 & 2 & 1 &Binary \\ 192& 1 &1 & 0 & 0 & 0 & 0 & 0 & 0 & 11000000\\ 168& 1 &0 & 1 & 0 & 1 & 0 & 0 & 0 & 10101000\\ 10& 0& 0 &0 & 0 & 1 & 0 & 1 & 0 & 00001010\\ 15& 0 &0 & 0 & 0 & 1 & 1 & 1 & 1 & 00001111 \end{matrix}$

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Subject: CCNA

Q:

In the operation of CSMA/CD, which host(s) have priority after the expiration of the backoff algorithm?

A) All hosts have equal priority	B) The two hosts that caused the collision will have equal priority
C) The host that sent the jam signal after the collision	D) The host with the highest MAC address

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