SMTP is based on …………………………………..delivary, contacts on well known port
number……………………………
A. host to host, 23
B. host to host, 25
C. end to end , 23
D. end to end, 80

1 Answer

Answer :

B. host to host, 25

Related questions

Description : The well-known port of the SMTP server is ……. a. 110 b. 25 c. 50 d. 20

Last Answer : b. 25

Description : Typically the TCP port used by SMTP is A. 25 B. 35 C. 50 D. 15

Last Answer : A. 25

Description : The ……… protocol is based on end-to- end delivery. a. SMTP b. TCP c. IP d. SCTP

Last Answer : a. SMTP

Description : The ______ protocol is based on end-to-end delivery. A. SCTP B. TCP C. SMTP D. SCTP

Last Answer : C. SMTP

Description : Suppose you are browsing the world wide web using a web browser and trying to access the web servers. What is the underlying protocol and port number that are being used? a. UDP, 80 b. TCP, 80 c. TCP, 25 d. UDP, 25

Last Answer : b. TCP, 80

Description : port number does FTP use? A. 21 B. 25 C. 23 D. 80

Last Answer : A. 21

Description : DNS can obtain the of host if its domain name is known and vice versa. A) Station address B) IP address C) Port address D) Checksum

Last Answer : B) IP address

Description : Which of the following TCP/IP protocolallows an application program on one machine to senda datagram to anapplicationprogram onanother machine? A. UDP B. VMTP C. X.25 D. SMTP E. None of the above

Last Answer : UDP

Description : A ________ is a 16-bit number used by the host-to-host protocol to identify to which higher- level protocol or application program (process) it must deliver incoming messages A. connection B. UDP C. port D. TCP

Last Answer : C. port

Description : The local host and the remote host are defined using IP addresses. To define the processes, we need second identifiers called ____________ A. UDP addresses B. transport addresses C. port addresses D. none of the above

Last Answer : C. port addresses

Description : To deliver a message to the correct application program running on a host, the _______ address must be consulted. A. IP B. MAC C. Port D. None of the mentioned

Last Answer : C. Port

Description : Which address is used to identify a process on a host by the transport layer? a) physical address b) logical address c) port address d) specific address

Last Answer : c) port address

Description : The least significant 23 bits in a 48-bit Ethernet address identify a ________. A) multicast router B) host C) multicast group D) noneof the above

Last Answer : multicast group

Description : In FTP, the well-known port ____ is used for the control connection and the well-known port ________ for the data connection A. 21; 22 B. 21; 20 C. 20; 21 D. none of the above

Last Answer : B. 21; 20

Description : What port does Telnet use? a. 22 b. 80 c. 20 d. 23

Last Answer : d. 23

Description : Which of the following TCP/IP protocol is used for transferring electronic mail messages from one machine to another? A. FTP B. SNMP C. SMTP D. RPC E. None of the above

Last Answer : SMTP

Description : Which of the following of the TCP/IP protocols is the used for transferring files from one machine to another? A) FTP B) C) SNMP C) SMTP D) D) Rpe

Last Answer : A) FTP

Description : Which of the following TCP/IP protocols is used for transferring files form one machine to another. A) FTP B) SNMP C) SMTP D) RPC

Last Answer : A) FTP

Description : The name of the protocol which provides virtual terminal in TCP/IP model is. A) Telnet B) SMTP C) HTTP

Last Answer : A) Telnet

Description : Which of the following protocols is used by email server to maintain a central repository that can be accessed from any machine ? a. POP3 b. IMAP c. SMTP d. DMSP

Last Answer : b. IMAP

Description : Which of the following protocol is used for transferring electronic mail messages from one machine to another? a. TELNET b. FTP c. SNMP d. SMTP

Last Answer : d. SMTP

Description : In one of the pairs of protocols given below, both the protocols can use multiple TCP connections between the same client and the server. Which one is that? a. HTTP, FTP b. HTTP, TELNET c. FTP, SMTP d. HTTP, SMTP

Last Answer : a. HTTP, FTP

Description : Consider different activities related to email: m1: Send an email from a mail client to a mail server m2: Download an email from mailbox server to a mail client m3: Checking email in a web browser Which is the application ... FTP m3: HTTP c. m1: SMTP m2: POP m3: HTTP d. m1: POP m2: SMTP m3: IMAP

Last Answer : c. m1: SMTP m2: POP m3: HTTP

Description : In SMTP mail transaction flow, the sender SMTP establishes a TCP connection with the destination SMTP and then waits for the server to send a ………. a. 220 service ready message b. 421 service not available message c. Both of the above d. None of the above

Last Answer : c. Both of the above

Description : In the SMTP herder field_____ is added by the final transport system that delivers the mail. a. Reply-to b. Return-path c. Subject d. From

Last Answer : b. Return-path

Description : In the SMTP header field_____ is a summary of the message being sent which is specified by the sender. a. Reply-to b. Return-path c. Subject d. From

Last Answer : c. Subject

Description : TELNET, FTP, SMTP, Protocols fall in the following layer of OSI reference model? a. Transport layer b. Internet layer c. Network layer d. Application layer

Last Answer : d. Application layer

Description : Which one of the following uses UDP as the transport protocol? a. HTTP b. Telnet c. DNS d. SMTP

Last Answer : c. DNS

Description : Which of the following transport layer protocols is used to support electronic mail? a. SMTP b. IP c. TCP d. UDP

Last Answer : c. TCP

Description : SMTP is a protocol used in which layer? a. Application b. Network c. Physical d. Transport

Last Answer : a. Application

Description : The sender SMTP establishes a TCP connection with the destination SMTP and then waits for the server to send a ____ Service ready message.. A. 420 B. 320 C. 220 D. 120

Last Answer : C. 220

Description : When displaying a web page, the application layer uses the _____________ A. HTTP protocol B. FTP protocol C. SMTP protocol D. TCP protocol

Last Answer : A. HTTP protocol

Description : Electronic mail uses which Application layer protocol? A. SMTP B. HTTP C. FTP D. SIP

Last Answer : A. SMTP

Description : Which of the following protocol is used to retrieve emails? A. SMTP B. POP3 C. FTP D. SNMP

Last Answer : B. POP3

Description : Which is not a application layer protocol? A. HTTP B. SMTP C. FTP D. UDP

Last Answer : D. UDP

Description : Explain the functions of SMTP.

Last Answer : System for sending messages to other computer users based on e-mail addresses. SMTP provides mail exchange between users on the same or different computers. ∙ User Agent ∙ Mail Transfer Agent ∙ Multipurpose Internet Mail Extensions ∙ Post Office Protocol

Description : How does MIME enhance SMTP?

Last Answer : MIME is a supplementary protocol that allows non-ASCII data to be sent through SMTP. MIME transforms non-ASCII data at the sender site to NVT ASCII data and deliverers it to the client SMTP to ... receives the NVT ASCII data and delivers it to MIME to be transformed back to the original data.

Description : What is the function of SMTP?

Last Answer : The TCP/IP protocol supports electronic mail on the Internet is called Simple Mail Transfer (SMTP). It is a system for sending messages to other computer users based on e-mail addresses. SMTP provides mail exchange between users on the same or different computers.

Description : Membership in a VLAN can be based on _________. A) port numbers B) MAC addresses C) IP addresses D) all of theabove

Last Answer : all of theabove

Description : A ________ switch is a multistageswitch with microswitches at each stagethat route the packets based on theoutput port representedas a binary string. A) crossbar B) TSI C) banyan D) none of the above

Last Answer : banyan

Description : There are 10 users plugged into a hub running 10Mbps half-duplex.and a server connected to the switch running 10Mbps half- duplex as well. Find the bandwidth does each host have to the server? a. 100 kbps b. 1 Mbps c. 2 Mbps d. 10 Mbps

Last Answer : d. 10 Mbps

Description : . In IPv6, the___________ address isgenerally usedby a normal host as a unicast address. A) provider-based unicast B) link local C) site local D) none of the above

Last Answer : provider-based unicast

Description : DNS can obtain the ................. of host if its domain name is known and vice versa. A) Station address B) IP address C) Port address D) Checksum

Last Answer : B) IP address

Description : DNS can obtain the ..................of host if its domain name is known and vice versa. A) Station address B) IP address C) Port address D) Checksum

Last Answer : B) IP address

Description : In the TCP/IP protocol suite, which one of the following is NOT part of the IP header? a. Fragment Offset b. Source IP address c. Destination IP address d. Destination port number

Last Answer : d. Destination port number

Description : FTP server listens for connection on port number A. 20 B. 21 C. 22 D. 23

Last Answer : B. 21

Description : FTP server listens for connection on which port number? a) 18 b) 21 c) 22 d) 26

Last Answer : b) 21

Description : You havea class A network address 10.0.0.0 with 40subnets,but arerequiredto add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Which subnet mask should youassign? A. ... B. 255.248.0.0 C. 255.252.0.0 D. 255.254.0.0 E. 255.255.255.255

Last Answer : 255.254.0.0

Description : The address of a class B host is to be split into subnets with a 6-bit subnet number. What is the maximum number of subnets and the maximum number of hosts in each subnet? a. 62 subnets and 262142 hosts. b. 64 subnets and 262142 hosts. c. 62 subnets and 1022 hosts. d. 64 subnets and 1024 hosts

Last Answer : c. 62 subnets and 1022 hosts.

Description : How does HA works? Port number? How many host failure allowed and why?

Last Answer : Maximum allowed host failures within a HA cluster is 4.