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CCNA 1 > Level 1 Chap 4-7 > Flashcards

Level 1 Chap 4-7 Flashcards

(55 cards)

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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?

24
Q

What is another name for the OSI data link layer?

Layer 1
Layer 2
Layer 3
Layer 6

25
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
Logical Link Control Media Access Control
26
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
Provides the method of the get the frame on and off the media
27
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
Accepts the frame as a medium De-encapsulates the frame Re-encapsulates the packet into a new frame
28
The media access control method used depends on which two criteria? Layer 3 IP protocol Media Sharing Topology Transport Layer protocol Type of data
Media Sharing Topology
29
Which organization defines standards for the network access layer (i.e., the OSI physical and data link layers)? Cisco IANA IEEE IETF
IEEE
30
Which topology displays networking device layer IP addresses? aerial topology IP address topology logical topology physical topology
logical topology
31
What kind of network would use point-to-point, hub and spoke, or mesh topologies? PAN LAN WLAN WAN
WAN
32
Which LAN topology is a hybrid topology? bus extended star ring star
extended star
33
Which duplex communication method is used in WLANs? full-duplex half-duplex simplex
half-duplex
34
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
carrier sense multiple/collision detection
35
What does the data link layer add to a Layer 3 packet to create a frame? (Choose two.) Flags sequence number Header Trailer
Header Trailer
36
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
To determine if the fam experienced transmission errors
37
Which of the following are data link layer protocols? (Choose three) 802.11 Ethernet IP PPP UDP
802.11 Ethernet PPP
38
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
Dest NIC address, source NIC, Source IP, dest IP
39
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
MAC address
40
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
MAC Address
41
Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.) EIA ITU IEEE IANA ISCO
ITU IEEE
42
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
Logical topologies are concerned with how a network transfers data between devices
43
What method is used to manage contention-based access on a wireless network? CSMA/CA Token Passing CSMA/CD priority ordering
CSMA/CA
44
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
mesh
45
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
Data flows in one direction at a time
46
Which data link layer media access control method does Ethernet use with legacy Ethernet hubs? determinism token passing CSMA/CD turn taking
CSMA/CD
47
What are the two sublayers of the OSI model data link layer? (Choose two.) network access MAC LLC internet physical transport
MAC LLC
48
Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media? transport physical application data link
data link
49
What type of physical topology can be created by connecting all Ethernet cables to a central device? bus star mesh ring
star
50
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
It provides media access control and performs error detection It accepts Layer 3 packets and encapsulates them into frames
51
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
the use of full-duplex Layer 2 switches
52
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
cut-through switching store and forward switching
53
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
cut through switching
54
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
port based memory buffering shared memory buffering
55
What feature automatically negotiates the best speed and duplex setting between interconnecting devices? auto MDIX autobots auto negotiation autotune
auto negotiation

CCNA 1 (2 decks)

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