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 CISCO Certification Questions

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Q:

What is the subnet for host ID 10.16.3.65/23?

Answer

A/23 is 255.255.254.0. The third octet is a block size of 2.0, 2, 4. The subnet is in the 16.2.0 subnet; the broadcast address is 16.3.255

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Subject: CCNA

24 15870
Q:

Which class of IP address provides a maximum of only 254 host addresses per network ID?

A) Class A B) Class B
C) Class C D) Class D
 
Answer & Explanation Answer: C) Class C

Explanation:

Class C network address has only 8 bits for defining hosts : 28-2 = 256 - 2 = 254

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Filed Under: CCNA
Job Role: Analyst , IT Trainer , Project Manager

22 22580
Q:

The network address of 172.16.0.0/19 provides how many subnets and hosts?

A) 7 subnets, 2046 hosts each B) 7 subnets, 8190 hosts each
C) 8 subnets, 2046 hosts each D) 8 subnets, 8190 hosts each
 
Answer & Explanation Answer: D) 8 subnets, 8190 hosts each

Explanation:

A CIDR address of/19 is 255.255.224.0. This is a Class B address, so that is only 3 subnet bits, but it provides 13 host bits, or 8 subnets, each with 8,190 hosts.

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22 23102
Q:

Convert 10100010111101011001110110001011 2 to dotted decimal.

Answer

Convert to dotted hexadecimal first, and then convert each hexadecimal number pair to decimal.

A2.F5.9D.8B then 162.245.157.139

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Subject: CCNP

14 4372
Q:

At which layer is routing implemented , enabling connections and path selection between two end systems?

Answer

The Network layer provides routing through an internetwork and logical addressing.

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Subject: CCNA

12 8185
Q:

Which layer defines how data is formatted , presented, encoded, and converted for use on the network?

Answer

The presentation layer makes sure that data is in a readable format for the Application layer.

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Subject: CCNA

11 6049
Q:

Which OSI layer defines the standards for cabling and connectors?

A) Layer 1 B) Layer 4
C) Layer 7 D) Layer 3
 
Answer & Explanation Answer: A) Layer 1

Explanation:

OSI layer 1 defines the standards for cabling and connectors.

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Filed Under: CCNA
Job Role: Network Engineer

10 6502
Q:

Which layer combines bits into bytes and bytes into frames, uses MAC addressing , and provides error detection?

Answer

The Data Link layer is responsible for the framing of data packets.

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Subject: CCNA

10 7726