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CCNA 1 > Level 1 Chap 4-7 > Flashcards

Level 1 Chap 4-7 Flashcards

1
Q

True or false? The physical layer is only concerned with wired network connections.

A

FALSE

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2
Q

True or false? When a frame is encoded by the physical layer, all bits are sent over the media at the same time.

A

FALSE

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3
Q

The physical layer of the receiving device passes bits up to which higher level layer?

Application
Presentation
Network
Data link

A

Datalink

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4
Q

What PDU is received by the physical layer for encoding and transmission?

Frame
Segment
Packet

A

Frame

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5
Q

Which media uses patterns of microwaves to represent bits?

Copper
Wireless
fiber-optic

A

Wireless

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6
Q

Which media uses patterns of light to represent bits?

Copper
wireless
Fiber-Optic

A

Fiber-Optic

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7
Q

Which media uses electrical pulses to represent bits?

Copper
wireless
Fiber-Optic

A

Copper

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8
Q

Which of these is the name for the capacity of a medium to carry data?

Bandwidth
Throughput
Goodput

A

Bandwidth

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9
Q

Which of these is a measure of the transfer of bits across the media?

Bandwidth
Throughput
Goodput

A

Throughput

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10
Q

Which of the following attaches antennas to wireless devices? It can also be bundled with fiber-optic cabling for two-way data transmission.

UTP
STP
Coaxial

A

Coaxial

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11
Q

Which of the following counters EMI and RFI by using shielding techniques and special connectors?

UTP
STP
Coaxial

A

STP

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12
Q

Which of the following is the most common network media?

UTP
STP
Coaxial

A

UTP

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13
Q

Which of the following terminates with BNC, N type and F type connectors?

UTP
STP
Coaxial

A

Coaxial

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14
Q

Which of the following fiber-optic cable types can help data travel approximately 500 meters?

Multimode
Single-mode

A

Multimode

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15
Q

Which of the following fiber-optic cable types use light emitting diodes (LEDs) as a data light source transmitter?

Multimode
Single-mode

A

Multimode

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16
Q

Which of the following fiber-optic cable types use lasers in a single stream as a data light source transmitter?

Multimode
Single-mode

A

Single-mode

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17
Q

Which of the following fiber-optic cable types is used to connect long-distance telephony and cable TV applications?

Multimode
Single-mode

A

Single-mode

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18
Q

Which of the following fiber-optic cable types can travel approximately 100 km?

Multimode
Single-mode

A

Single-mode

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19
Q

Which of the following fiber-optic cable types is used within a campus network?

Multimode
Single-mode

A

Multimode

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20
Q

A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?

Network Layer
Data Link Layer
Physical Layer
Presentation Layer

A

Physical Layer

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21
Q

What type of cable is used to connect a workstation serial port to a Cisco router console port?

Coaxial
Crossover
Straight-Through
Rollover

A

Rollover

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22
Q

Why are two strands of fiber used for a single fiber optic connection?

The 2 strands allow data to travel for longer distances
They prevent Crosstalk
They allow Full Duplex
They increase the speed at which data can travel

A

They allow Full Duplex

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23
Q

Which procedure is used to reduce the effect of crosstalk in copper cables?

A
24
Q

What is another name for the OSI data link layer?

Layer 1
Layer 2
Layer 3
Layer 6

A

Layer 2

25
Q

The IEEE 802 LAN/MAN data link layer consists of which two sublayers? (Choose two.)

Network Control Protocol
Logical Link Control
Media Access Control
Link Control Protocol

A

Logical Link Control
Media Access Control

26
Q

What is the responsibility of the MAC sublayer?

Adds Layer 3 addresses to the frame
Communicates with the network Layer 3
Provides the method of the get the frame on and off the media
Transmits the bits on the media

A

Provides the method of the get the frame on and off the media

27
Q

What Layer 2 function does a router perform? (Choose three.)

Accepts the frame as a medium
De-encapsulates the frame
Refers to its Layer 3 Routing table for a matching destination network
Re-encapsulates the packet into a new frame

A

Accepts the frame as a medium
De-encapsulates the frame
Re-encapsulates the packet into a new frame

28
Q

The media access control method used depends on which two criteria?

Layer 3 IP protocol
Media Sharing
Topology
Transport Layer protocol
Type of data

A

Media Sharing
Topology

29
Q

Which organization defines standards for the network access layer (i.e., the OSI physical and data link layers)?

Cisco
IANA
IEEE
IETF

A

IEEE

30
Q

Which topology displays networking device layer IP addresses?

aerial topology
IP address topology
logical topology
physical topology

A

logical topology

31
Q

What kind of network would use point-to-point, hub and spoke, or mesh topologies?

PAN
LAN
WLAN
WAN

A

WAN

32
Q

Which LAN topology is a hybrid topology?

bus
extended star
ring
star

A

extended star

33
Q

Which duplex communication method is used in WLANs?

full-duplex
half-duplex
simplex

A

half-duplex

34
Q

Which media access control method is used in legacy Ethernet LANs?

carrier sense multiple/collision annoyance
carrier sense multiple/collision avoidance
carrier sense multiple/collision destruction
carrier sense multiple/collision detection

A

carrier sense multiple/collision detection

35
Q

What does the data link layer add to a Layer 3 packet to create a frame? (Choose two.)

Flags
sequence number
Header
Trailer

A

Header
Trailer

36
Q

What is the function of the last field in a data link layer frame?

To determine if the fam experienced transmission errors
To identify special flow control services
To identify begging and end limits of the frame
To identify the Layer 3 protocol

A

To determine if the fam experienced transmission errors

37
Q

Which of the following are data link layer protocols? (Choose three)

802.11
Ethernet
IP
PPP
UDP

A

802.11
Ethernet
PPP

38
Q

Which lists the Layer 2 and Layer 3 address fields in the correct order?

Dest NIC address, source NIC, Source IP, dest IP
source NIC, Dest NIC, source IP, dest IP
Dest NIC, Source NIC, dest IP, Source IP
source NIC, Dest NIC, dest IP, Source IP

A

Dest NIC address, source NIC, Source IP, dest IP

39
Q

What identifier is used at the data link layer to uniquely identify an Ethernet device?

UDP Port
MAC address
sequence number
TCP port number
IP Address

A

MAC address

40
Q

What attribute of a NIC would place it at the data link layer of the OSI model?

MAC Address
RJ-45 port
IP Address
TCP/IP protocol stack
Attached ethernet cable

A

MAC Address

41
Q

Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.)

EIA
ITU
IEEE
IANA
ISCO

A

ITU
IEEE

42
Q

What is true concerning physical and logical topologies?

Physical topologies are concerned with how a network transfers frames
Logical topologies are concerned with how a network transfers data between devices
Physical topologies display the IP addressing scheme
Logical topology is always the same as the physical

A

Logical topologies are concerned with how a network transfers data between devices

43
Q

What method is used to manage contention-based access on a wireless network?

CSMA/CA
Token Passing
CSMA/CD
priority ordering

A

CSMA/CA

44
Q

A technician has been asked to develop a physical topology for a network that provides a high level of redundancy. Which physical topology requires that every node is attached to every other node on the network?

hierarchical
ring
bus
mesh
star

A

mesh

45
Q

Which statement describes the half-duplex mode of data transmission?

Data flows in both directions on the network
Data flows to many destinations simultaneously
Data flows in one direction at a time
Data can only flow in one direction

A

Data flows in one direction at a time

46
Q

Which data link layer media access control method does Ethernet use with legacy Ethernet hubs?

determinism
token passing
CSMA/CD
turn taking

A

CSMA/CD

47
Q

What are the two sublayers of the OSI model data link layer? (Choose two.)

network access
MAC
LLC
internet
physical
transport

A

MAC
LLC

48
Q

Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media?

transport
physical
application
data link

A

data link

49
Q

What type of physical topology can be created by connecting all Ethernet cables to a central device?

bus
star
mesh
ring

A

star

50
Q

What are two services performed by the data link layer of the OSI model? (Choose two.)

It fragments data packets into MTU size
It monitors the Layer 2 communication by building a MAC address table
It provides media access control and performs error detection
It accepts Layer 3 packets and encapsulates them into frames
It determines the path to forward packets

A

It provides media access control and performs error detection
It accepts Layer 3 packets and encapsulates them into frames

51
Q

Although CSMA/CD is still a feature of Ethernet, why is it no longer necessary?

the development of half duplex switch operation
the use of CSMA/CA
the use of full-duplex Layer 2 switches
IP 6 addresses
the use of Gigabit speeds

A

the use of full-duplex Layer 2 switches

52
Q

What are two methods for switching data between ports on a switch? (Choose two.)

cut-off switching
cut-through switching
store and forward switching
store and supply switching
store and restore switching

A

cut-through switching
store and forward switching

53
Q

Which switching method can be implemented using fast-forward switching or fragment-free switching?

cut off switching
cut through switching
store and forward switching
store and restore switching

A

cut through switching

54
Q

Which two types of memory buffering techniques are used by switches?

long term memory buffering
port based memory buffering
shared memory buffering
short term memory buffering

A

port based memory buffering
shared memory buffering

55
Q

What feature automatically negotiates the best speed and duplex setting between interconnecting devices?

auto MDIX
autobots
auto negotiation
autotune

A

auto negotiation

CCNA 1 (2 decks)

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