Networking

You have recently installed a new Windows Server 2016 system. To ensure the accuracy for the system time, you have loaded an application that synchronizes the hardware clock on the server with an external time source on the internet. Now, you must configure the firewall on your network to allow time synchronization traffic through

123 TCP/IP port 123 is assigned to the network time protocol (NTP). NTP is used to communicate time synchronization information between systems on a network. the hypertext transfer protocol (HTTP) uses TCP/IP port 80. HTTP is the protocol usage to send requests to a web server and retrieve web pages from a web server. TCP/IP port 119 is used by the network news transfer protocol (NNTP). NNTP is used to access and retrieve messages from newsgroups. TCP/IP port 110 is used by the post office protocol version 3 (POP3). POP3 is used to download email from mail servers.

You are configuring a network firewall to allow SMTP outbound email traffic and POP3 inbound email traffic. Which if the following TCP/IP port should you open on the firewall?

25 and 110 The simple mail transfer protocol (SMTP) uses TCP/IP port 25. The post office protocol version 3 (POP3) uses TCP/IP port 110. The file transfer protocol (FTP) uses TCP/IP port 21. The internet message access protocol (IMAP) uses TCP/IP port 143. TCP/IP port 443 is used by the secure sockets layer (SSL) protocol.

To increased security on your company's internal network, the administrator has disabled as many ports as possible. Now, though you can browse the internet, you are unable to perform secure credit cased transactions. Which port needs to be enabled to allow secure transactions?

443 To perform secure transactions, SSL on port 443 needs to be enabled.

Haley configure a website using Windows Server 2016 default values. What are the HTTP port and SSL port settings?

80 for HHTP; 443 for SSL The default TCP port setting for HTTP is 80. You can change that setting to another TCP setting that is not in use, but users will have to know they must request the non-default setting, or they will be unable to connect. The SSL port number is 443 and is only used with secure socket layers for encryption.

You have just installed a packet firewall on your network. Which options will you be able to set on your firewall?

Destination address of packet Source address of a packet Port number Firewalls allow your to filter by IP address and port number

Which protocol us used in the World Wide Wed to transmit web pages to web browsers?

HTTP Web servers and browsers use or hypertext transfer protocol (HTTP), to transmit we pages on the internet. This protocol is often confused with hypertext markup language (HTML), which is used to create web content.

Which protocol is used to securely browse a website?

HTTPS HTTPS is a secure form of HTTP that uses SSL to encrypt data before it is transmitted. HTTP is used by web browsers and web servers to exchange files (such as web pages) through the World Wide Web and intranets. SSH is used for secure remote management. UDP is a data transport control protocol that does not include error corrections or detection mechanisms. SIP is a protocol used byVoice over IP (VoIP) to set up and terminate phone calls. ARP is used to find the IP address of a device with a known MAC address.

Which of the following protocols allows hosts to exchange messages to indicate problems with packet delivery?

ICMP The internet control message protocol (ICMP) allows hosts to exchange messages to indicate a packet's status as it travels through the netwrok

You are an application developer, and you are writing a program fro exchange in video files through a TCP/IP network. You need to select a transport protocol that will guarantee delivery. Which TCP/IP protocol provides this capability?

TCP Write the application to use the Transmission Control Protocol (TCP). TCP guarantees delivery through error checking and acknowledgments.

You are monitoring network traffic on your network. You see a large amount of traffic between a Windows workstation and a Windows server on the following ports. 137 138 139 What is the source of this network traffic?

The workstation is using NetBIOS to access shared resources on the server

You are configuring a firewall to allow access to a server hosted on the demilitarized zone of your network. You open TCP/IP ports 80, 25, 110, and 143. Assuming that no other ports on the firewall need to configure to provide access, which applications are most likely to be hosted on the server?

Web server and email server TCP/IP port 80 is associated with accessing webpages from a web server using the hypertext transfer protocol (HTTP). email can be accessed using a number of protocols, including the simple mail transfer protocol (SMTP), the post office protocol version 3 (POP3) and the internet message access protocol version 4 (IMAP4). SMTP uses TCP/IP port 25, while POP3 uses TCP/ip port 110, and IMAP4 uses TCP/IP port 143. Domain name server (DNS) traffic uses TCP/IP port 53. Newsgroup servers are accessed using the network news transfer (NNTP) protocol on TCP/IP port 119. Dynamic host configuration protocol (DHCP) traffic uses the BOOTP protocol on TCP/IP port 67 and 68.

You are asked to recommend an email retrieval protocol for a company's sales team. The sales team needs to access email from various locations and possibly different computers. The sales team does not want to worry about transferring email messages or files back and forth between these computers. Which email protocol is designed for this purpose?

IMAP4 The internet message access protocol version 4 (IMAP) is an email retrieval protocol designed to enable users to access their email from various locations without transferring messages or filed back and forth between computers. Messages remain on the remote mail server and are not automatically downloaded to a client system. POP3 is an email retrieval protocol that downloads and then deletes messages from a mail server. POP3 is well suited for reading email offline, but you must go online when you want to receive and send new messages. Once your new message have been downloaded to your computer, you can log off to read them. This option is often used when email is received over a dial-up connection,

Which of the following protocols stores email ion the mail server and allows users to access messages from various client devices without having to downloaded the emails?

IMAP4 IMAP4 allows a mail server to store messages users can access from various locations using various client devices. A POP3 server requires the user to download his or her email. SMTP allows a user to send email to a server. The NTP protocol synchronizes the clocks of all computers on a network.

The UDP transport protocol provides which of the following features?

Low Overhead Connection less data gram services UDP is a connectionless protocol used by applications that need lows overhead and do not require guaranteed delivery

You have a large TCP/IP network and want to keep a host's real time clocks synchronized. What protocol should you use?

NTP The network time protocol (NTP) lets you keep clocks synchronized

Which of the following TCP/IP protocols do email clients use to download messages from a remote mail server?

POP3 The POP3 protocol is part of the TCP/IP protocol suite. It is used to retrieve email from a remote server to a local client over a TCP/IP connection. SNMP is a protocol used to monitor network traffic. SMTP is a TCP/IP protocol used to send email. FTP is used to transfer files.

What protocol sends email to a mail server?

SMTP Sends email to a mail server

Your computer has just acquired another company in the same city. You need to integrate the two email systems t=so that messages can be exchanges between the email servers. Currently, each network uses an email package from a different Vendor. Which TCP/IP protocol will enable message exchange between systems?

SMTP The simple mail transfer protocol (SMTP) specifies how messages are exchanged between email servers. Email clients use POP3 and IMAP4 to download email messages from email servers. FTP is a file transfer protocol. ICMP is used in ping and trace route to communicate network information.

Which of the following protocols includes extensive error checking to ensure that a deans mission is sent and received without mistakes?

TCP TCP protocol includes error checking