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CCNA V5.0 - CCNA V5 ANSWERS
CCNA 1 Chapter 5 v5.0 Exam Answers 2014
December 10, 2013 by quocvuong · Leave a Comment

CCNA 1 Chapter 5 v5.0 Exam Answers 2014

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CCNA 1 V 5
CCNA 2 V 5
CCNA 3 V 5
CCNA 4 V 5

1

Packet Tracer

RECENT POSTS
2
A host is trying to send a packet to a device on a remote LAN segment, but there
are currently no mappings in its ARP cache. How will the device obtain a
destination MAC address?

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It will send a request to the DNS server for the destination MAC address.

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It will send an ARP request for the MAC address of the destination device.
It will send the frame and use its own MAC address as the destination.
It will send the frame with a broadcast MAC address.

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It will send an ARP request for the MAC address of the default gateway.*

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3
Which address or combination of addresses does a Layer 3 switch use to make
forwarding decisions?
MAC and IP addresses*

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MAC address only

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MAC and port addresses


port address only


IP address only


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4
What are two potential network problems that can result from ARP operation?
(Choose two.)
Multiple ARP replies result in the switch MAC address table containing entries that match
the MAC addresses of hosts that are connected to the relevant switch port.
On large networks with low bandwidth, multiple ARP broadcasts could cause
data communication delays.*
Network attackers could manipulate MAC address and IP address mappings in
ARP messages with the intent of intercepting network traffic.*
Manually configuring static ARP associations could facilitate ARP poisoning or MAC


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address spoofing.
Large numbers of ARP request broadcasts could cause the host MAC address table to
overflow and prevent the host from communicating on the network.
5
Launch PT Hide and Save PT
Open the PT Activity. Perform the tasks in the activity instruction and then
answer the question.

What destination address will PC1 include in the destination address field of
the Ethernet frame that it sends to PC2?
00e0.b0be.8014
0030.a3e5.0401*
192.168.0.34
192.168.0.17
0007.ec35.a5c6
6
How does adding an Ethernet line card affect the form factor of a switch?
by increasing the back plane switching speed


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by expanding the port density*
by expanding the NVRAM capacity
by making the switch stackable
7
Which two statements are correct about MAC and IP addresses during data
transmission if NAT is not involved? (Choose two.)
Destination MAC addresses will never change in a frame that goes across seven routers.
A packet that has crossed four routers has changed the destination IP address four times.
Destination and source MAC addresses have local significance and change
every time a frame goes from one LAN to another.*
Destination IP addresses in a packet header remain constant along the entire
path to a target host.*
Every time a frame is encapsulated with a new destination MAC address, a new
destination IP address is needed.
8
What is the Layer 2 multicast MAC address that corresponds to the Layer 3
IPv4 multicast address 224.139.34.56?
FE-80-00-0B-22-38



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01-00-5E-0B-22-38*
FF-FF-FF-0B-22-38
00-00-00-0B-22-38
01-5E-00-0B-22-38
9
What is the purpose of the preamble in an Ethernet frame?
is used to identify the destination address
is used to identify the source address
is used as a padding for data
is used for timing synchronization*
10
A Layer 2 switch is used to switch incoming frames from a 1000BASE-T port to
a port connected to a 100Base-T network. Which method of memory buffering
would work best for this task?
level 1 cache buffering
shared memory buffering*
fixed configuration buffering


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port-based buffering
11
A network administrator is connecting two modern switches using a straightthrough cable. The switches are new and have never been configured. Which
three statements are correct about the final result of the connection? (Choose
three.)
The auto-MDIX feature will configure the interfaces eliminating the need for a
crossover cable.*
The connection will not be possible unless the administrator changes the cable to a
crossover cable.
The duplex capability has to be manually configured because it cannot be negotiated.
If both switches support different speeds, they will each work at their own fastest speed.
The link between switches will work as full-duplex.*
The link between the switches will work at the fastest speed that is supported
by both switches.*
12
Refer to the exhibit. PC1 issues an ARP request because it needs to send a
packet to PC2. In this scenario, what will happen next?
RT1 will send an ARP reply with its Fa0/0 MAC address.



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PC2 will send an ARP reply with its MAC address.*
RT1 will send an ARP reply with the PC2 MAC address.
SW1 will send an ARP reply with its Fa0/1 MAC address.
SW1 will send an ARP reply with the PC2 MAC address.
13
What is a characteristic of a contention-based access method?
It processes more overhead than the controlled access methods do.
It scales very well under heavy media use.
It is a nondeterministic method.*
It has mechanisms to track the turns to access the media.
14
What statement illustrates a drawback of the CSMA/CD access method?
Collisions can decrease network performance.*
Deterministic media access protocols slow network performance.
CSMA/CD LAN technologies are only available at slower speeds than other LAN
technologies.
It is more complex than non-deterministic protocols.


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15
When would a switch record multiple entries for a single switch port in its MAC
address table?
when the switch is configured for Layer 3 switching
when another switch is connected to the switch port*
when a router is connected to the switch port
when multiple ARP broadcasts have been forwarded
16
Which two statements describe a fixed configuration Ethernet switch? (Choose
two.)
An SVI cannot be configured on the switch.
A fixed configuration switch may be stackable.*
The number of ports on the switch cannot be increased.*
The port density of the switch is determined by the Cisco IOS.
The switch cannot be configured with multiple VLANs.
17
Which two statements describe features or functions of the logical link control
sublayer in Ethernet standards? (Choose two.)
Logical link control is implemented in software.*


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The LLC sublayer interacts directly with the NIC driver software.
The data link layer uses LLC to communicate with the upper layers of the
protocol suite.*
The LLC sublayer is responsible for the placement and retrieval of frames on and off the
media.
Logical link control is specified in the IEEE 802.3 standard.
18
A network administrator issues the following commands on a Layer 3 switch:
DLS1(config)# interface f0/3
DLS1(config-if)# no switchport
DLS1(config-if)# ip address 172.16.0.1 255.255.255.0
DLS1(config-if)# no shutdown
DLS1(config-if)# end
What is the administrator configuring?
a Cisco Express Forwarding instance
a routed port*
a trunk interface
a switched virtual interface



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19
Which statement is true about MAC addresses?
The first three bytes are used by the vendor assigned OUI.*
MAC addresses are implemented by software.
The ISO is responsible for MAC addresses regulations.
A NIC only needs a MAC address if connected to a WAN.
20

Refer to the exhibit. The exhibit shows a small switched network and the
contents of the MAC address table of the switch. PC1 has sent a frame
addressed to PC3. What will the switch do with the frame?
The switch will forward the frame to all ports.
The switch will forward the frame to all ports except port 4.*
The switch will forward the frame only to port 2.
The switch will discard the frame.
The switch will forward the frame only to ports 1 and 3.
21
Fill in the blank.


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The binary number 0000 1010 can be expressed as “A” in hexadecimal.
22
What are two features of ARP? (Choose two.)
If a host is ready to send a packet to a local destination device and it has the IP
address but not the MAC address of the destination, it generates an ARP
broadcast.*
An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of
the destination host and its multicast MAC address.
When a host is encapsulating a packet into a frame, it refers to the MAC address table to
determine the mapping of IP addresses to MAC addresses.
If a device receiving an ARP request has the destination IPv4 address, it
responds with an ARP reply.*
If no device responds to the ARP request, then the originating node will broadcast the data
packet to all devices on the network segment.
23



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