1.1 Ports and Protocols Questions

Network Time Protocol (NTP) runs on UDP port:

123

Which of the TCP port numbers listed below is assigned to the Internet Message Access Protocol (IMAP)?

143

SNMP runs on UDP port:

161

What UDP port is assigned to the Domain Name System (DNS)?

53

A network administrator wants to secure the existing access to a directory service with SSL/TLS encryption. Which of the following TCP ports needs to be opened to implement this change?

636

A network protocol providing an alternative solution to the manual allocation of IP addresses is known as:

DHCP

Which of the following answers refers to a system containing mappings of domain names to various types of data, such as numerical IP addresses? - TCP/IP - DNS - SQL - DHCP

DNS

LDAP is an example of:

Directory Access Protocol

POP3 is used for:

Email retrieval

What is the function of FTP?

File Exchange

TCP port 1720 is used by:

H.323

TCP port 80 is assigned to:

Hypertext Transfer Protocol (HTTP)

A Microsoft-proprietary remote-access protocol providing a user with graphical interface for connecting to another computer over a network is known as:

RDP

A network protocol that allows for secure file transfer over Secure Shell (SSH) is called:

SFTP

Which of the following answers refers to a protocol used for managing real-time sessions that include voice, video, application sharing, or instant messaging services? - L2TP - BGP - RSTP - SIP

SIP

What is used mainly by computers running Microsoft Windows operating systems and provides shared access to files, directories, and devices?

SMB/CIFS

Which of the following protocols runs on TCP port 445?

SMB/CIFS

Which of the answers listed below refers to a secure replacement for Telnet? - CHAP - FTP - SNMP - SSH

SSH

Post Office Protocol v3 (POP3) uses:

TCP port 110

Which port enables the FTP's Data Connection for sending file data?

TCP port 20

The File Transfer Protocol (FTP) Control Connection for administering a session is established through:

TCP port 21

Secure Shell (SSH) protocol runs on:

TCP port 22

A network technician uses Remote Desktop Protocol (RDP) client on their Windows OS to remotely troubleshoot a problem on another Windows machine. Which of the following ports needs to be opened for the built-in Windows RDP server to allow this type of network connection?

TCP port 3389

HTTPS runs on:

TCP port 443

What ports are assigned to the Session Initiation Protocol (SIP)?

TCP port 5060, TCP port 5061

What is the primary networking protocol for transmitting data across the network?

TCP/IP

A very basic form of file sharing protocol that provides no security features:

TFTP

UDP port 69 is assigned to:

TFTP

(TRUE OR FALSE) Secure File Transfer Protocol (SFTP) is an extension to the Secure Shell protocol (SSH) and runs by default on TCP port 22.

True

Dynamic Host Configuration Protocol (DHCP) runs on:

UDP port 67, UDP port 68

A type of protocol that transmits a series of messages to a destination to establish a connection before sending any application data.

connection-oriented

Telnet uses TCP port:

23

Temporary ports (ports 1,024 through 65,535), determined in real-time by client is referred to as:

Ephemeral ports

(TRUE OR FALSE) Transmission Control Protocol (TCP) is an example of a connectionless protocol. Because TCP doesn't support three-way handshake while establishing a network connection, it is referred to as unreliable or best-effort protocol.

False

(TRUE OR FALSE) User Datagram Protocol (UDP) is a connection-oriented protocol using a three-way handshake which is a set of initial steps required for establishing network connection. UDP supports retransmission of lost packets, flow control (managing the amount of data that is being sent), and sequencing (rearranging packets that arrived out of order).

False

Which of the answers listed below refers to a protocol used for managing VoIP and VTC services? - SMB - H.323 - SCP - ICP

H.323

Out of the following, what is the foundation of data communication for the World Wide Web? - SMTP - FTP - POP3 - HTTP

HTTP

What is the name of a network protocol that secures web traffic via SSL/TLS encryption?

HTTPS

Which of the following answers refers to a protocol used by routers, hosts and network devices to generate error messages and troubleshoot problems with delivery of IP packets? - CCMP - RSTP - ICMP - SNMP

ICMP

How does IMAP4 compare to POP3?

IMAP4 offers improved functionality of POP3, and serves the same function as POP3.

What is the name of a network layer protocol that specifies the format of packets and addressing scheme in network communications?

IP

A TCP/IP protocol that is used by devices to communicate updates or error information to other devices. Not used for data transfer, and is commonly used for administrative requests:

Internet Control Message Protocol (ICMP)

TCP port 389 is the default network port for:

LDAP

Which of the following answers refers to an SSL/TLS-based directory access protocol? - H.323 - PPTP - Kerberos - LDAPS

LDAPS

Which of the answers listed below refers to a network protocol used for synchronizing clocks over a computer network? - NTP - VTP - NNTP - RTP

NTP

Permanent port numbers (ports 0 through 1,023), usually on a server or service is referred to as:

Non-ephemeral ports

Receives emails from an email server. Authenticates and transfers email messages to your device:

POP, IMAP

TCP port 25 is used by:

SMTP

A type of protocol used in network management systems for monitoring network-attached devices is called:

SNMP

A type of cryptographic network protocol for secure data communication, remote command-line login, remote command execution, and other secure network services between two networked computers is known as:

SSH

Unblocking TCP port 22 enables what type of traffic?

SSH and SFTP

The SMTP protocol is used for:

Sending email between mail servers or from a client device.

What enables remote login and command execution, transmits data in an unencrypted form, and provides username & password authentication?

Telnet

TCP is an example of a connection-oriented protocol or connectionless protocol?

connection-oriented protocol

A type of protocol that transmits messages to a destination without first establishing a connection with the destination system

connectionless

UDP is an example of a connection-oriented protocol or connectionless protocol?

connectionless protocol