IT6201 Data Communications and Networking 1 (Finals Q1 & Q2)

 This course covers configuring and implementation of LAN networks.

IT6201 Data Communications and Networking 1

Question 1

Correct

Mark 1.00 out of 1.00

Flag question

Question text

In fiber optic meda, the signals are represented as patterns of Answer.

Question 2

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which statement is correct about network protocols?

Select one:

a.

They are only required for exchange of message between devices on remote network

b.

They all function in the network access layer of TCP/IP

c.

They define how messages are exchanged between the sources and the destination

d.

Network protocols define the type of hardware that is used and how it is mounted in racks

Feedback

Your answer is correct.

Question 3

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which two message timing mechanisms are used in data communication? (Choose two.)

Select one or more:

a.

response timeout

b.

encapsulation

c.

encoding

d.

flow control

e.

formatting

Feedback

Your answer is correct.

Question 4

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which logical address is used for delivery of data to a remote network?

Select one:

a.

source MAC address

b.

source IP address

c.

destination MAC address

d.

destination IP address

Feedback

Your answer is correct.

Question 5

Correct

Mark 1.00 out of 1.00

Flag question

Question text

A Answer address is defined as a reserved address that routes packets back to the host

Question 6

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which two statements are true of the deterministic access method?(Choose two.)

Select one or more:

a.

The throughput is predictable

b.

Each device has to transmit before passing the token to the next device

c.

Devices take turns transmitting

d.

It is a very efficient method because there are no collisions

e.

The order of transmission is dictated by the node that asks first for the token

Feedback

Your answer is correct.

Question 7

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What three functions are defined by network protocols to allow communication between known source and destination IP addresses? (Choose three.)

Select one or more:

a.

delivery options

b.

message size

c.

data encoding

d.

media selection

e.

connector specifications

f.

end-device installation

Feedback

Your answer is correct.

Question 8

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What type of delivery uses data link layer addresses?

Select one:

a.

local delivery

b.

remote delivery

c.

local and remote delivery

d.

remote delivery using routers

Feedback

Your answer is correct.

Question 9

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What is the purpose of protocols in data communications?

Select one:

a.

determining the electronic specifications to enable the communication

b.

specifying the bandwidth of the channel or medium for each type of communication

c.

providing the rules required for a specific type of communication to occur

d.

specifying the device operating systems that will support the communication

Feedback

Your answer is correct.

Question 10

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which two components are added to the PDU at the network access layer? (Choose two.)

Select one or more:

a.

frame header

b.

IP header

c.

Trailer

d.

TCP header

e.

HTTP header

Feedback

Your answer is correct.

Question 11

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which two factors influence the method that is used for media access control? (Choose two.)

Select one or more:

a.

how connection between nodes appears to the data link layer

b.

how the IP protocol forwards the packet to the destination

c.

how signals are encoded by the NICs on end devices

d.

how data is generated by end devices applications

e.

how nodes share the media

Feedback

Your answer is correct.

Question 12

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which is a function of the Logical Link Control (LLC) sublayer?

Select one:

a.

to accept segments and package them into data units that are called packets

b.

to provide data link layer addressing

c.

to define the media access processes that are performed by the hardware

d.

to identify which network layer protocol is being used

Feedback

Your answer is correct.

Question 13

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What is an advantage of using standards to develop and implement protocols?

Select one:

a.

Standard provide flexibility for manufacturers to create devices that comply with unique requirements

b.

A particular protocol can only be implemented by one manufacturer

c.

Different manufacturers are free to apply different requirements when implementing a protocol

d.

Products from different manufacturers can interoperate successfully

Feedback

Your answer is correct.

Question 14

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What will a network administrator use to modify a configuration on a Cisco router?

Select one:

a.

the Windows command prompt

b.

Windows Explorer

c.

a control panel

d.

IOS

e.

a DHCP server

Feedback

Your answer is correct.

Question 15

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What command will prevent all unencrypted passwords from displaying in plain text in a configuration file?

Select one:

a.

(config) # service password-encryption

b.

(config) # enable secret Encrypted_Password

c.

(config) # enable secret Secret_Password

d.

(config)# enable password secret

e.

(config-line) # password secret

Feedback

Your answer is correct.

Question 16

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which two statements are true regarding the user EXEC mode? (Choose two.)

Select one or more:

a.

Global configuration mode can be accessed by entering the enable command

b.

Interfaces and routing protocols can be configured

c.

This is the default mode on an unconfigured router when first powered up.

d.

Only some aspects of the router configuration can be viewed

e.

All router commands are available

Feedback

Your answer is correct.

Question 17

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What are the parts of an IPv4 address? (Choose two.)

Select one or more:

a.

Subnet mask

b.

Host

c.

Network

d.

Next hop

e.

Broadcast

Question 18

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which message delivery option is used when all devices need to receive the same message simultaneously?

Select one:

a.

multicast

b.

unicast

c.

duplex

d.

broadcast

Feedback

Your answer is correct.

Question 19

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which organization develops the 802 family of standard for wired and wireless LANs and MANs?

Select one:

a.

IANA

b.

ISO

c.

ISOC

d.

IEEE

e.

ITU-T

Feedback

Your answer is correct.

Question 20

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What happens when two devices on the same subnet are communicating?

Select one:

a.

The data link layer addresses are added to the IP header

b.

The sending device will use ARP to determine the IP address of the receiver

c.

The host portion of the IP addresses will be different

d.

The frame will be sent to the default gateway for delivery to the receiving device

Feedback

Your answer is correct.

Question 2

Correct

Mark 1.00 out of 1.00

Flag question

Question text

The TCP/IP application layer effectively consists of which three OSI layers?

Select one:

a.

Application, network, data link

b.

Application, presentation, session

c.

Application, session, transport

d.

Application, transport, network

Question 3

Correct

Mark 1.00 out of 1.00

Flag question

Question text

The 8-bit binary value for 41 is Answer

Question 4

Correct

Mark 1.00 out of 1.00

Flag question

Question text

A client is downloading a large file from a server using FTP. Many of the segments are lost during transit. What will most likely happen?

Select one:

a.

The FTP server responds to the client with a smaller window size in the TCP header.

b.

The FTP client responds to the server with a smaller window size in the TCP header.

c.

The FTP client responds to the client with an increased window size in the TCP header.

d.

The FTP session continues with no alteration in window size, and the missing segment is requested again after the rest of the file is downloaded.

e.

The FTP server responds to the client with an increased window size in the TCP header.

f.

The FTP session is immediately terminated.

g.

The FTP session continues, but the result is a corrupt file that must be downloaded again.

Question 5

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What three protocols do email users and servers use to process email? (Choose three.)

Select one or more:

a.

IMAP4

b.

DNS

c.

SMTP

d.

DHCP

e.

POP3

Question 6

Correct

Mark 1.00 out of 1.00

Flag question

Question text

The shortest compressed format of the IPv6 address 2001: 0DB8:0000:1470:0000:0000:0000:0200 is Answer

Question 7

Correct

Mark 1.00 out of 1.00

Flag question

Question text

A network administrator notices that the default gateway devices sends an ICMP Redirect message to the workstation when the workstation tries to connect to file server on another network. What is the purpose for this ICMP message?

Select one:

a.

The default gateway does not know a route to the destination

b.

The network topology has changed and a new route toward the file server is available

c.

The default gateway is overwhelmed by network traffic and the request is redirected to another router

d.

To notify the workstation, that another router on the same network, is the better default-gateway to reach the remote server

Feedback

Your answer is correct.

Question 8

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which statement is true about an interface that is configured with the IPv6 address command?

Select one:

a.

A global unicast IPv6 address is dynamically configured on the interface

b.

Any IPv4 addresses that are assigned to the interface are replaced with an IPv6 address

c.

IPv6 traffic-forwarding is enable on the interface

d.

A link-local IPv6 address is automatically

Feedback

Your answer is correct.

Question 9

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What is an advantage that UDP has over TCP?

Select one:

a.

Low overhead

b.

Reordering of segments

c.

Reliable delivery

d.

Advanced flow control

Question 10

Correct

Mark 1.00 out of 1.00

Flag question

Question text

A user is unable to access the company server from a computer. On issuing the ipconfig command, the user finds that the IP address of the computer is displayed as 169.254.0.2. What type of address is this?

Select one:

a.

loopback

b.

private

c.

experimental

d.

link-local

Feedback

Your answer is correct.

Question 11

Correct

Mark 1.00 out of 1.00

Flag question

Question text

The last host address on the 10.15.25.0/24 network is Answer

Question 12

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What is the purpose of using a source port number in a TCP communication?

Select one:

a.

to keep track of multiple conversations between devices

b.

to notify the remote device that the conversation is over

c.

to inquire for a non received segment

d.

to assemble the segments that arrived out of order

Feedback

Your answer is correct.

Question 13

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What does UDP do when receiving messages that are more than one datagram in length?

Select one:

a.

UDP requests retransmission of the datagrams in the correct order before passing to the application.

b.

UDP reassembles that data in the order it was received and passes it to the application.

c.

UDP transmissions are limited to a single datagram.

d.

UDP places the datagrams into the correct order before passing them to the application.

Question 14

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What range of ports can either be used by TCP or UDP to identify the requested service on the destination device or as a client source port?

Select one:

a.

0 to 49151

b.

49152 to 65535

c.

1024 to 49151

d.

0 to 1023

Question 15

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which application use UDP as the transport layer protocol?

Select one:

a.

Telnet

b.

HTTP

c.

DHCP

d.

DNS queries

e.

SMTP

Feedback

Your answer is correct.

Question 16

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which statement accurately describes public IP addresses?

Select one:

a.

Public addresses cannot be used within a private network

b.

Public addresses can be duplicated only within a local network

c.

Public IP addresses must be unique across the entire Internet

d.

Public IP addresses are only required to be unique within the local network

e.

Network administrators are free to select any public addresses to use for network devices that access the Internet

Feedback

Your answer is correct.

Question 17

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which number or set of numbers represents a socket?

Select one:

a.

01-23-45-67-89-AB

b.

21

c.

192.168.1.1:80

d.

10.1.1.15

Feedback

Your answer is correct.

Question 18

Correct

Mark 1.00 out of 1.00

Flag question

Question text

Which TCP header field specifies the number of bytes that can be accepted before an acknowledgement is required?

Select one:

a.

Checksum

b.

Window size

c.

Acknowledgement number

d.

Header length

Question 19

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What is a characteristic of UDP?

Select one:

a.

Expectational acknowledgements

b.

Flow control

c.

Windowing

d.

Reliable delivery

e.

Connectionless

Question 20

Correct

Mark 1.00 out of 1.00

Flag question

Question text

What is assigned by the transport layer to identify an application or service?

Select one:

a.

Packet

b.

Port

c.

Segment

d.

MAC address

e.

IP address