Lesson 11-12 Assessment

Question 1

cloud hosting

Answer 1

used for hosting the packages of a website ran in the virtual cloud of several hardware computers.

Question 2

virtual private server

Answer 2

the ISP allocates a virtual machine on a physical server. This is isolated from other customer instances by the hypervisor

Question 3

HTTP

Answer 3

Hypertext Transfer Protocol
is an application protocol that enables clients to request resources from an HTTP server using a URL.

Question 4

Use of email and voice services

Answer 4

email services: enables a person to compose a message and send it to another user on their own network or anywhere in the world via the Internet.

voice services: standard methods for the provision of business and social communications.

Question 5

TFTP vs FTP

Answer 5

FIle transfer protocol is an TCP application protocol used to transfer files between
network hosts.

Trivial File Transfer Protocol is a UDP application protocol that only supports GET and PUT commands

Question 6

SQL

Answer 6

structure query language is an programming and query language common to many relational database management systems.

Question 7

POP

Answer 7

Post Office Protocol is a mailbox access protocol that allows the download of email messages from a server mailbox to a client but not management of the remote inbox. Its most active version is POP 3

Question 8

SMTP

Answer 8

Simple mail transfer protocol an application protocol that discovers the IP address of the recipient SMTP server by using the domain name part of their email address.

SMTP is useful only to deliver mail to hosts that are permanently available

Question 9

IMAP

Answer 9

Internet Message Access Protocol is a mail retrieval protocol that supports permanent connections to a server and connecting multiple clients to the same mailbox simultaneously.

Question 10

Why is VOIP hard to support

Answer 10

Voice and video services can be challenging to support because they require response times measured in milliseconds (ms). Delayed responses will result in poor call or video quality.

Question 11

SIP

Answer 11

Session Initiation Protocol is a session control protocol used to establish, disestablish, and manage VoIP and conferencing communications sessions.

Question 12

What happens if a message sent via SMTP cannot be delivered?

Answer 12

The server generates a non-delivery report (NDR) with an appropriate error code and discards the message

Question 13

What protocol would enable a client to manage mail subfolders on a remote mail server?

Answer 13

Internet Message Access Protocol or IMAP Secure.

Question 14

True or False? SIP enables the location of user agents via a specially formatted URI.

Answer 14

True

Question 15

Follow these guidelines to support network applications effectively:

Answer 15

Configure web servers with a valid certificate issued by a locally trusted or public certificate authority to enable HTTPS over TCP/443.

Question 16

Follow these guidelines to support network applications effectively:

Answer 16

Enable secure FTP on web servers, file servers, and appliances as a means of transferring files securely.

Question 17

What is a directly connected route?

Answer 17

An IP network or subnet connected to one of the router’s interfaces.

Question 18

Which of the parameters in the following routing table entry represents the gateway?

R 192.168.1.0/24 [120/1] via 198.51.100.254, GigabitEthernet0/1

Answer 18

198.51.100.254—the gateway is the address of the next hop router. 1

92.168.1.0/24 is the destination and GigabitEthernet0/1 is the interface

Question 19

What type of routing table entry is shown below?

S* 0.0.0.0/0 [1/0] via 192.0.2.1

Answer 19

static entry for the default route

Question 20

What happens if a message sent via SMTP cannot be delivered?

Answer 20

the server generates a non-delivery report (NDR) with an appropriate error code and discards the message.

Question 21

Follow these guidelines to support network applications effectively:

Answer 21

Deploy web servers to intranets as required. Public websites can be deployed to a perimeter network, but most organizations use some type of hosted or cloud service.

Question 22

True or False? SIP enables the location of user agents via a specially formatted URI.

Answer 22

True

Question 23

Terminal emulator

Answer 23

A terminal emulator is a built-in Linux command/software that processes text input and output between users or the shell.

Question 24

RMP

Answer 24

Remote Desktop Protocol is an application protocol developed by Microsoft that provides encrypted remote GUI connections to a physical Windows machine.

Question 25

NTP

Answer 25

Network Time Protocol is used for time synchronization of devices and many time-dependent applications.

Question 26

True or false? SSH must be configured with two key pairs to operate; one on the server and one on the client.

Answer 26

False; Secure shell, is an application protocol that supports secure tunneling and remote terminal emulation. The client may use a key pair or other mechanisms, such as a password for authentication.

Question 27

What remote management service is associated with TCP port 23?

Answer 27

Telnet is a remote management service that supports insecure terminal emulation for remote host management and transmits shell commands.

Question 28

Which port is used by the Network Time Protocol (NTP)?

Answer 28

UDP/123 becuase 123 is the client's source port.

Question 29

SNTP

Answer 29

A Simple network time protocol is a modified version of NTP. it is usually used by client hosts to synchronize the device time. A client host that supports only SNTP cannot act as a time source for other hosts.

Question 30

What sort of log would you inspect if you wanted to track web server access attempts?

Answer 30

Audit/security/ and access log.

Question 31

What would be the purpose of configuring thresholds in network monitoring software?

Answer 31

The software could produce an alert if network performance did not meet any given metric.

Question 32

How is jitter mitigated by a VoIP application?

Answer 32

By buffering packets.

Question 33

What is a top listener in terms of network monitoring?

Answer 33

An interface that receives the most incoming traffic.

Question 34

Configure endpoints to provide information to the log collector. This could involve one or more different methods, such as:

Answer 34

Configure SNMP traps. * Configure remote logging to the using syslog or a similar protocol. * Configure NetFlow/IPFIX exporters. * Deploy agents to the endpoints to perform log and performance counter collection and measurement