FTP & TFTP

Question 1

FTP & TFTP are used for:

Answer 1

Transferring files over a network

Question 2

T/F: FTP & TFTP both use a client-server model

Answer 2

T

Question 3

The most common use of FTP/TFTP for network engineers is:

Answer 3

Upgrading the operating system of a network device

Question 4

T/F: FTP/TFTP can be used to upgrade the IOS image of a networking device

Answer 4

T

Question 5

Describe the functionality of TFTP

Answer 5

Only permits a client copying a file to or from a server

Question 6

T/F: FTP is lighter weight than TFTP

Answer 6

F

TFTP is much lighter than FTP

Question 7

T/F: TFTP required OAuth2

Answer 7

F

TFTP requires no authentication whatsoever

Question 7

T/F: TFTP uses no authentication whatsoever

Answer 7

T

Question 8

T/F: TFTP transfers are protected by MD5 hash encryption

Answer 8

F

TFTP transfers are in plain text

Question 9

T/F: TFTP transfers are unencrypted and sent in plain text

Answer 9

T

Question 10

What is the protocol and port used by TFTP

Answer 10

UDP 69

Question 11

T/F: While TFTP uses UDP, TFTP has connection and reliability protocols built within it

Answer 11

T

Question 12

T/F: Every TFTP data message is acknowledged

Answer 12

T

Question 13

T/F: If a waiting device doesn’t receive a TFTP message within an expected time, the message will be resent

Answer 13

T

Question 14

TFTP uses ______ communication to create reliability

Answer 14

Lock-step communication

Client and server alternately send a message then wait for a reply

Question 15

Describe Lock-Step communication

Answer 15

The client and the server alternate in sending messages, and wait for a reply. If no reply is received, retransmissions are made as necessary. This is less efficient than TCP’s reliability measures

Question 16

What are the three TFTP file transfer phases?

Answer 16

1. Connection
2. Data Transfer
3. Connection Termination

Question 17

What port does FTP use

Answer 17

TCP 20 and 21

Question 18

T/F: FTP uses encryption to protect data being transferred, but no authentication is required

Answer 18

F

FTP uses authentication but doesn’t encrypt data transfers

Question 19

T/F: FTP uses authentication but does not encrypt data transfers

Answer 19

T

Question 20

What is the FTP version that adds additional security

Answer 20

FTPS (FTP over SSL/TLS), or, SSH FTP (SFTP)

FTPS is an upgrade to FTP, but SFTP is a different protocol altogether

Question 21

T/F: SFTP is an upgrade to FTP

Answer 21

F

SFTP is a new protocol altogether and doesn’t have any relation to the original FTP protocol

Question 22

T/F: FTPS a new seperate protocol rather than an upgrade to FTP

Answer 22

F

FTPS is an upgraded version of FTP

Question 23

T/F: FTP allows for clients to navigate file directories, add and remove directories, etc.

Answer 23

T

Question 24

What protocol and port does an FTP control connection use

Answer 24

TCP 21

Question 25

What protocol and port does an FTP data connection use

Answer 25

TCP 20

Question 26

In order to navigate/add/remove directories on the server, an FTP client sends ____ on port ____ to the server

Answer 26

FTP commands, port 21

Question 27

What are the two different modes of FTP data connections

Answer 27

Active and passive

Question 28

The default method of establishing FTP data connections is _____ mode

Answer 28

Active mode, where the server initiates the TCP connection

Question 29

In FTP passive mode, the ___ initiates the TCP connection

Answer 29

Client

Question 30

When a client is behind a firewall, it usually means FTP _____ mode must be used

Answer 30

Passive, since a firewall is more likely to block an incoming connection than an outgoing connection

Question 31

What is the command to view the file systems of a Cisco device

Answer 31

sh file systems

Question 32

What is the command to view the contents of the flash memory on a Cisco device

Answer 32

sh flash

Question 33

What is the command to use TFTP to get an updated Cisco IOS image

Answer 33

copy tftp: flash:

Question 34

What is the command to have a Cisco IOS device use a specific image of IOS

Answer 34

boot system flash:{image name} write reload

Question 35

What is the command to delete an old image of IOS on a Cisco device

Answer 35

delete flash:{image name}

Question 36

What is the series of commands to use FTP to get an updated Cisco IOS image

Answer 36

ip ftp username {username} ip ftp password {password} copy ftp: flash: boot system flash: {image name} wr reload

Question 37

Which of the following statements about FTP are true? (pick 2) a) FTP control connections use TCP port 20 b) FTP control connections use TCP port 21 c) FTP control connections use TCP port 69 d) FTP data connections use TCP port 20 e) FTP data connections use TCP port 21 f) FTP data connections use TCP port 69

Answer 37

B and D

Question 38

Which of the following commands can be used to transfer a file form an external TFTP server to the local device's flash storage? a) copy tftp: flash: b) copy flash: tftp: c) move tftp: flash: d) move flash: tftp:

Answer 38

A

Question 39

R1 is behind a firewall and wants to connect to an external FTP server. Which of the following statements is true? a) R1 should use FTP passive mode for the control connection b) R1 should use FTP active mode for the control connection c) R1 should use FTP passive mode for the data connection d) R1 should use FTP active mode for the data connection

Answer 39

C Active and passive mode only apply to FTP data connections, since the client always initiates the control connection

Question 40

Which type of file system is used to store the startup-config of a device running Cisco IOS a) Opaque b) Disk c) Network d) NVRAM

Answer 40

D

Question 41

Which of the following functions are not possible when using TFTP (pick 2) a) Copy a file from a server b) Create a new directory on a server c) List the contents of a server d) Copy a file to a server

Answer 41

B and C

Question 42

Which of the following Application layer protocols use UDP for unsynchronized, connectionless data transfer? (pick 2) FTP SMTP TFTP SNMP HTTP

Answer 42

TFTP and SNMP