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 CCNA Questions

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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

1 2061
Q:

In thefollowing output, what type of NAT is being used?

ip nat pool todd-nat 170.168.10,10 170.168.10.20 netmask 255.255.255.0

Answer

Dynamic NAT

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Subject: CCNA

0 2031
Q:

Which proprietary Cisco STP extensions would put a switch port into err-disabled if a BPDU is received on this port?

Answer

BPDUGuard

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Subject: CCNA

0 2021
Q:

Differentiate a MAC address and an IP address and describe how and when each address type is used in a network?

Answer

A MAC address is a hexadecimal number identifying the physical connection of a host. MAC addresses are said to operate on layer 2 of the OSI model. IP addresses, which can be expressed in binary or decimal format, are logical identifiers that are said to be on layer 3 of the OSI model. Hosts on the same physical segment locate one another with MAC addresses, while IP addresses are used when they reside on different LAN segments or subnets. Even when the hosts are in different subnets , a destination IP address will be converted to a MAC address when the packet reaches the destination network via routing.

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Subject: CCNA

1 2004
Q:

What command would you use to set an access list on a VTY line?

Answer

line vty 0 4


access - class 110 in 

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Subject: CCNA

0 1984
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

0 1971
Q:

Which Cisco 802.1d extension stops BPDU from being transmitted out a port?

Answer

PortFast

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Subject: CCNA

0 1965
Q:

What is the Classs A Private IP address space?

Answer

10.0.0.0 through 10.255.255.255

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Subject: CCNA

0 1869