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Intro to Networks > Phase 1 > Flashcards

Phase 1 Flashcards

1
Q

A company is contemplating whether to use a client/server or a peer-to-peer network. What are the characteristics of a peer-to-peer network?

A

Easy to create

Lacks centralized administration

Less cost to implement

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2
Q

Which device would direct data along alternate pathways when there was a link failure?

A

An intermediary device

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3
Q

What do End devices provide on a network?

A

They originate the data that flows through the network.

They are the interface between humans and the communication network.

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4
Q

How do home users connect to the internet?

A

Cellular & Cable

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5
Q

Which term describes data, voice, and video traffic co-existing on the same network?

A

Convergence

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6
Q

For which of the following types of network traffic would an organization typically establish QoS policies?

A

Voice & video conferencing

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7
Q

Which expression accurately defines the term bandwidth?

A

A measure of the number of bits that can be transmitted in a single second

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8
Q

A user is implementing security on a small office network. Which actions would provide the minimum security requirements for this network?

A

Implementing a firewall

Installing antivirus software

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9
Q

Which of the following are features of a circuit-switched network?

A

Establishes a dedicated circuit between source and destination

A new connection must be initiated upon call failure

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10
Q

What is the function of the kernel of an operating system?

A

The kernel provisions hardware resources to meet software requirements.

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11
Q

Which statement below is correct for accessing the switch CLI?

A

Use the console port to locally access the switch using a special cable connected to the PC.

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12
Q

What information does the show startup-config command display?

A

The contents of the saved configuration file in the NVRAM

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13
Q

Which of the following Cisco IOS modes of operation represents Global Config mode?

A

Switch25(config)#

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14
Q

Which of the following hostnames follow the guidelines for naming conventions on Cisco IOS devices?

A

RM-3-Switch-2A4

SwBranch799

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15
Q

Which Cisco IOS command would move from privileged exec mode to global configuration mode?

A

Switch_Floor1# configure terminal

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16
Q

What are the characteristics of RAM on a Cisco device?

A

The configuration that is actively running on the device is stored in RAM.

The contents of RAM are lost during a power cycle.

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17
Q

Where would an IP address be assigned on a layer 2 switch?

A

Switch Virtual Interface

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18
Q

What method can be used by two computers to ensure that packets are not dropped because too much data is being sent too quickly?

A

The receiving device requests that the sending device slows down transmission rate

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19
Q

What type of communication will send a message to all devices on an IPv4 local area network?

A

Broadcast

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20
Q

What is the process called where control data is added to the application data?

A

Encapsulation

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21
Q

A web server is providing a request for a webpage to a client. From the perspective of the client, what is the correct order of the protocol stack that is used to receive the transmission?

A

Ethernet, IP, TCP, HTTP

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22
Q

Which application layer protocols are part of the TCP/IP protocol suite?

A

DNS & FTP & DHCP

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23
Q

Which layers of the OSI model are comparable in function to the application layer of the TCP/IP model?

A

Application – Session – Presentation

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24
Q

Which address does a PC use when deciding whether to accept a packet?

A

Destination IP address

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25
What will happen if the default gateway address is incorrectly configured on a host?
The host can communicate with other hosts in the local network. The host cannot communicate with hosts in other networks.
26
What should be assigned as a host computer's default gateway address?
The logical address of the router interface on the same network as the host computer
27
What happens to frames that are too large or too small?
They are not delivered
28
Which definitions accurately describe the associated application layer protocol?
Telnet - provides remote access to servers and networking devices
29
A manufacturing company subscribes to certain hosted services from its ISP. The services that are required include hosted world wide web, file transfer, and e-mail. Which port numbers represent these key applications?
20/21 FTP 80 HTTP 25 Email SMTP
30
Why would it be desireable for an ISP to use POP3 instead of IMAP?
Messages are downloaded to the client and deleted from the email servers
31
What can HTTPS use to provide secure communication?
Authentication and encryption
32
Which of the following statements describe the DHCP process?
The DHCP offer message includes the duration of the lease The DHCP v6 uses a Solicit message as the first part of the process The discover message will be received by all devices in the local network.
33
During the TCP 3 way handshake which of the following are agreed?
Window Size Maximum Segment Size
34
Which of the following is a best-effort file delivery protocol?
TFTP
35
How many ports does a server require to provide FTP services?
2
36
A host device needs to send a large video file across the network while providing data communication to other users. Which feature will allow different communication streams to occur at the same time, without having a single data stream using all available bandwidth?
Multiplexing
37
What is a socket pair?
The combination of a source ip address and port number, and a destination ip address and port number
38
Which flag in the TCP header is used in response to a received FIN in order to terminate connectivity between two network devices?
ACK
39
Which flag and field in the TCP header are used in the three-way handshake to establish connectivity between two network devices?
Sequence Number SYN
40
During a TCP session, a destination device sends an acknowledgment number to the source device. What does the acknowledgment number represent?
The next byte that the destination expects to receive
41
What information is used by TCP to reassemble and reorder received segments?
Sequence numbers
42
What happens if the first packet of an FTP transfer is lost?
The transport layer will resend when the timeout is reached.
43
When is UDP preferred to TCP?
When an application can tolerate some loss of data during transmission
44
Which of the following application layer protocols use TCP?
SMTP & FTP & HTTP
45
Which of the following is NOT a transport layer header field?
Data
46
In the event of segment loss what transport layer feature allows acknowledgment of discontinuous segments and requests retransmission of the missing data only?
SACK
47
What two criteria are used to help select a network medium from various network media?
The distance the medium can successfully carry a signal The cost of the medium and installation
48
An employee at a branch office is creating a quote for a customer. In order to do this, the employee needs to access confidential pricing information from internal servers at the Head Office. What type of network would the employee access?
An intranet
49
For which of the following types of network traffic would an organization typically establish QoS policies?
Video conferencing
50
Which term ensures the validation of the sender and uses mechanisms to ensure that the packet has not changed during transmission?
Data integrity
51
Which statement describes a potential benefit of cloud computing?
Reduced cost of infrastructure.
52
Which of the following will provide a secure remote CLI connection to a switch?
SSH
53
How does the service password-encryption command enhance password security on Cisco routers and switches?
It encrypts any passwords that are stored in plain text in RAM.
54
What are two characteristics of RAM on a Cisco device?
The configuration that is actively running on the device is stored in RAM. The contents of RAM are lost during a power cycle.
55
Where would an IP address be assigned on a layer 2 switch?
Interface VLAN1
56
What would you type at the windows command prompt to view domain name to IP address mappings?
Ipconfig /displaydns
57
Which of the following are valid iOS Hot Keys or shortcuts?
Ctrl-A Up Arrow Ctrl-R
58
Which of the following is a valid naming convention for a cisco device?
Must contain no spaces
59
What type of communication will send a message to a group of devices on an IPv4 local area network?
Multicast
60
Which statement is correct about network protocols?
They define a common format and a set of rules for exchanging messages between devices.
61
What are proprietary protocols?
A single company or organization controls how the protocol functions.
62
At which layer of the OSI model would a physical address be encapsulated?
Data link layer
63
Which PDU is processed when a host computer is de-encapsulating a message at the transport layer of the TCP/IP model?
Segment
64
Which characteristic must be assigned for the default gateway of a host computer?
The logical address of the router interface on the same network as the host computer
65
What does OSI stand for?
Open Systems Interconnect
66
What is the correct de-encapsulation order?
Bit > frame > packet > segment > data
67
Which two definitions accurately describe the associated application layer protocol?
Telnet - provides remote access to servers and networking devices DNS - resolves Internet names to IP addresses
68
What are two characteristics of the application layer of the TCP/IP model?
The creation and maintenance of dialogue between source and destination applications Closest to the end-user
69
What is an example of network communication that uses the client-server model?
A workstation initiates an FTP session to download a file from a dedicated central file store.
70
When retrieving email messages, which protocol allows for easy, centralized storage and backup of emails that would be desirable for a small- to medium-sized business?
IMAP
71
What are the steps of a successful automatic allocation of an IP address?
DHCP DISCOVER DHCP OFFER DHCP REQUEST DHCP ACK D.O.R.A
72
Which statement is true about FTP?
The client can download data from or upload data to the server.
73
During the TCP 3 way handshake which of the following are agreed?
Window Size | Maximun Segment Size
74
Which protocol allows the user to access server resources as if they were local to the client host?
SMB
75
What happens if part of an FTP message is not delivered to the destination?
The part of the FTP message that was lost is re-sent.
76
A host device needs to send a large video file across the network while providing data communication to other users. Which feature will allow different communication streams to occur at the same time, without having a single data stream using all available bandwidth?
Multiplexing
77
What type of information is included in the transport header?
Destination and source port numbers
78
What is a characteristic of a TCP server process?
There can be many ports open simultaneously on a server, one for each active server application.
79
During a TCP session, a destination device sends an acknowledgment number to the source device. What does the acknowledgment number represent?
The next byte that the destination expects to receive
80
What action will TCP initiate when network congestion impacts delivery to the destination host?
The source will decrease the amount of data that it sends before it must receive acknowledgments from the destination.
81
A host device is receiving the live streaming video. How does the device account for video data that is lost during transmission?
The device will continue receiving the streaming video, but there may be a momentary disruption.
82
Why does HTTP use TCP as the transport layer protocol?
Because HTTP requires reliable delivery
83
Which three application layer protocols use UDP?
VOIP TFTP DHCP
84
Which portion of a transport layer PDU is not generated during encapsulation?
Data

Intro to Networks (1 decks)

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