Testout ITSP 136 A+ 11.2 Networking Ports & Protocols 11.2.5 networking ports and protocols practice exam

What are some of the most common uses of UDP?

(UDP) is used for time-critical data transmissions such as DNS lookups, online gaming, and voice and video streaming. This communication protocol boosts transfer speeds by removing the need for a formal two-way connection before the data transmission begins.

What is a Packet?

Before data is sent across a network, the sending host first breaks it into smaller, more manageable chunks and encapsulates those data chunks inside a "packet."

To assist a user, a help desk technician is able to take advantage of a Windows proprietary network protocol that allows the technician to open a graphical interface to connect with the user's Windows computer. Which of the following TCP/IP port numbers is the default port used by this protocol? Answer 80 143 443 3389

By default, RDP uses port 3389.

Which of the following items of information does a packet header contain? (Select three.) Answer Data chunk order Receiver TFTP data How to deliver the packet Sender syn ack

Data chunk order Receiver Sender X A SYN packet and an ACK packet are part of the TCP three-way handshake process to establish a connection between two hosts. X Information about how to deliver the packet is the IP protocol's responsibility. X Trivial File Transfer Protocol (TFTP) is a simple protocol for exchanging files between two TCP/IP machines. It is not contained in a packet's header.

A technician has configured a client computer's network interface with server addresses to which the client will send requests for translating fully qualified domain names (FQDNs) to IP addresses and IP addresses to FQDNs. Which of the following TCP/IP suite protocols is used by the client to perform the request and also used by a server to respond to those requests? Answer Domain Name System (DNS) Secure Shell (SSH) Server Message Block (SMB) Dynamic Host Configuration Protocol (DHCP) I want to review this question later. (Optional)

Domain Name System (DNS) X DHCP is used by clients to request an IP address and by a server to offer an IP address. X SMB is used for shared access to files and miscellaneous communications between hosts on a network. This protocol also provides an authenticated inter-process communication mechanism. X SSH allows network services to communicate securely over an unsecure network (for example, secure remote login to computer systems by users).

A technician has configured a client computer's network interface to request an IP address. Which of the following TCP/IP suite protocols does the client computer use to perform the request and receive an IP address from a server? Answer Lightweight Directory Access Protocol (LDAP) Domain Name System (DNS) Simple Network Management Protocol (SNMP) Dynamic Host Configuration Protocol (DHCP)

Dynamic Host Configuration Protocol (DHCP)

You want to allow your users to download files from a server running the IP protocol. You also want to protect access to the files by requiring user authentication to access specific directories on the server. Which IP protocol should you implement to provide this capability? Answer FTP SSH TFTP SNMP SMTP LDAP

FTP : It enables file transfers and supports user authentication. X SNMP) is used to remotely monitor and manage network devices X TFTP) also enables file transfer but does not support user authentication. X LDAP) allows access to information about network resources X allows users to securely access a remote computer system's console prompt.

Which of the following protocols is used by an email client to retrieve messages from an email server, giving users the option to keep mail messages on the server? Answer NTP POP3 SMTP IMAP

IMAP: keeps a copy of a user's messages on the server after they're downloaded to the mail client. X SMTP allows a user to send email to a server, but it can't be used to retrieve messages from the server. X POP3 server is also used by a mail client to retrieve messages from a mail server, but it requires that the messages be deleted from the server after they've been downloaded. X NTP synchronizes all network computer clocks.

You've used your Windows workstation to map a drive to a shared folder on a Windows server. Which protocol was used to access the share? Answer LDAP SFTP SMB RDP

SMB : Server Message Block (SMB) is used by Windows systems to access shared resources over the network. X (Lightweight Directory Access Protocol LDAP) is used to access information stored in a server's directory service. X Remote Desktop Protocol (RDP) is used to access remote systems' desktops. X Secure File Transfer Protocol (SFTP) is used to securely transfer files between hosts.

What are the steps of the 3-way handshake?

The Three Steps of a Three-Way Handshake Step 1: A connection between server and client is established. ... Step 2: The server receives the SYN packet from the client node. ... Step 3: Client node receives the SYN/ACK from the server and responds with an ACK packet.

Which protocols does email use?

The common protocols for email delivery are Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Simple Mail Transfer Protocol (SMTP)

What is the main difference between Transmission Control Protocol (TCP) and User Datagram Protocol (UDP)?

UDP packets are sent with no verification method while TCP packets require verification of receipt. TCP is a connection-oriented protocol, whereas UDP is a connectionless protocol. TCP) drives reliable data transfers. In contrast, user datagram protocol (UDP) prioritizes SPEED and efficiency

A company has built a video streaming service that supplies training videos. Quickly transmitting video data to customers is more important than guaranteed delivery. Which of the following Transport layer IP suite protocols is MOST likely used for this service? Answer File Transfer Protocol (FTP) Transport Layer Protocol (TCP) Internet Control Message Protocol (ICMP) User Datagram Protocol (UDP)

User Datagram Protocol (UDP)

what is a Packet Header?

a special label that defines the sender, receiver, and order position of the packet.

Match the ports to correct protocol port 20 POP3 port 22 HTTPS port 443 STMP port 25 FTP port 587 SSL port 995 SSH port 21 telnet port 23 RDP port 3389 IMAP port 143

port 20 and port 21 FTP port 22 SSH port 443 HTTPS and SSL port 25 STMP port 587 STMP port 995 POP3 port 23 telnet port 3389 RDP port 143 IMAP

What port does Hypertext Transfer Protocol Secure (HTTPS) use?

port 443

Match each port number on the left with its associated protocol on the right. Drag 80 443 143 22 445 427 548 Drop Secure Shell (SSH) Apple Filing Protocol (AFP) HyperText Transfer Protocol Secure (HTTPS) HyperText Transfer Protocol (HTTP) Server Message Block (SMB/CIFS) directly over TCP Service Location Protocol (SLP) Internet Message Access Protocol (IMAP)

port 80 http port 443 https PORT 143 IMAP PORT 22 SSH PORT 445 SMB/CIFS PORT 427 SLP PORT 548 AFP

what is a 3-way handshake

the process two devices go through to establish a TCP connection.