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

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
by

1 Answer

Answer :

c. Both of the above
by

Related questions

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

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

Identify the correct order in which the following actions take place in an interaction between a web browser and a web server. 1. The web browser requests a webpage using HTTP. 2. The web browser establishes a TCP connection with the web server. 3. The web server sends the requested webpage using HTTP. 4. The web browser resolves the domain name using DNS. a. 4,2,1,3 b. 1,2,3,4 c. 4,1,2,3 d. 2,4,1,3

Description : Identify the correct order in which the following actions take place in an interaction between a web browser and a web server. 1. The web browser requests a webpage using HTTP. 2. The web browser establishes a TCP connection with the web ... DNS. a. 4,2,1,3 b. 1,2,3,4 c. 4,1,2,3 d. 2,4,1,3

Last Answer : a. 4,2,1,3

The client code recognizes the SSL request and establishes a connection through TCP port ____ to the SSL code on the server A. 1023 B. 402 C. 443D. 8080

Description : The client code recognizes the SSL request and establishes a connection through TCP port ____ to the SSL code on the server A. 1023 B. 402 C. 443 D. 8080

Last Answer : C. 443

The Post Office Protocol is an ………... protocol with both client (sender/receiver) and …………...functions A. electronic mail, server (storage) B. three layer , server C. UDP, transfer D. TCP, server

Description : The Post Office Protocol is an ………... protocol with both client (sender/receiver) and …………...functions A. electronic mail, server (storage) B. three layer , server C. UDP, transfer D. TCP, server

Last Answer : A. electronic mail, server (storage)

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 level protocol used in each activity? a. m1: HTTP m2: SMTP m3: POP b. m1: SMTP m2: FTP m3: HTTP c. m1: SMTP m2: POP m3: HTTP d. m1: POP m2: SMTP m3: IMAP

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

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

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

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

While initiating SSL session, the client code recognizes the SSL request and establishes a connection through TCP Part.................to the SSL code on the server. A) 420 B) 1032 C) 443 D) 322

Description : While initiating SSL session, the client code recognizes the SSL request and establishes a connection through TCP Part.................to the SSL code on the server. A) 420 B) 1032 C) 443 D) 322

Last Answer : C) 443

While initiating SSL session, the client code recognizes the SSL request and establishes a connection through TCP Part …………….. to the SSL code on the server. A) 420 B) 1032 C) 443 D) 322

Description : While initiating SSL session, the client code recognizes the SSL request and establishes a connection through TCP Part …………….. to the SSL code on the server. A) 420 B) 1032 C) 443 D) 322

Last Answer : C) 443

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

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

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

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

Point out the wrong statement. a) Distributed transaction systems such as internetworks or cloud computing systems magnify the difficulties faced by identity management systems b) Services that provide digital identity management as a service have been part of internetworked systems from Day One c) IDaaS Server establishes the identity of a domain as belonging to a set of assigned addresses d) None of the mentioned

Description : Point out the wrong statement. a) Distributed transaction systems such as internetworks or cloud computing systems magnify the difficulties faced by identity management systems b) Services that provide digital ... a domain as belonging to a set of assigned addresses d) None of the mentioned

Last Answer : IDaaS Server establishes the identity of a domain as belonging to a set of assigned addresses

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

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

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

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

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

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

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

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

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

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

Last Answer : a. SMTP

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

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

Last Answer : C. SMTP

When displaying a web page, the application layer uses the _____________A. HTTP protocol B. FTP protocol C. SMTP protocol D. TCP protocol

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

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

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

Last Answer : A. 25

_______ control refers to aset of proceduresused torestrict the amount ofdata that the sender can send before waiting foracknowledgment. A) Flow B) Error C) Transmission D) none of the above

Description : _______ control refers to aset of proceduresused torestrict the amount ofdata that the sender can send before waiting foracknowledgment. A) Flow B) Error C) Transmission D) none of the above

Last Answer : Flow

Which processes does TCP, but not UDP, use? a. Windowing b. Acknowledgements c. Both a and b d. Destination Port

Description : Which processes does TCP, but not UDP, use? a. Windowing b. Acknowledgements c. Both a and b d. Destination Port

Last Answer : c. Both a and b

.............. is a protocol used by e-mail clients to download emails to your computer. (A) TCP (B) FTP (C) SMTP (D) POP

Description : .............. is a protocol used by e-mail clients to download emails to your computer. (A) TCP (B) FTP (C) SMTP (D) POP

Last Answer : Answer: D

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

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

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

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

Last Answer : b. 25

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

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

7.How does traceroute work? A. It uses an ICMP destination-unreachable message to elicit the name of a router. B. It sends a specially crafted IP packet to a router to locate the number of hops from the sender to the destination network. C. It uses a protocol that will be rejected by the gateway to determine the location. D. It uses the TTL value in an ICMP message to determine the number of hops from the sender to the router.

Description : 7.How does traceroute work? A. It uses an ICMP destination-unreachable message to elicit the name of a router. B. It sends a specially crafted IP packet to a router to locate the number of hops from ... the TTL value in an ICMP message to determine the number of hops from the sender to the router.

Last Answer : D. It uses the TTL value in an ICMP message to determine the number of hops from the sender to the router.

Which of the following statement is False about the efficiency of the given channel? a. If we want to send big packets on the channel, then Stop and Wait is good choice. b. If length of packet increases, efficiency of channel also increases. c. Distance between sender and receiver is directly proportional to efficiency of channel. d. Efficient might be less if capacity of channel is high

Description : Which of the following statement is False about the efficiency of the given channel? a. If we want to send big packets on the channel, then Stop and Wait is good choice. b. If length ... is directly proportional to efficiency of channel. d. Efficient might be less if capacity of channel is high

Last Answer : Distance between sender and receiver is directly proportional to efficiency of channel.

A packet whose destination is outside the local TCP/IP network segment is sent to .............. (1) File server (2) DNS server (3) DHCP server (4) Default gateway

Description : A packet whose destination is outside the local TCP/IP network segment is sent to .............. (1) File server (2) DNS server (3) DHCP server (4) Default gateway

Last Answer : Answer: 4 

. If franked article is found in letter box a) This should not be transmitted and returned to the sender b) It is to be treated as unpaid article and send to its destination in normal manner. c) Taxed double value

Description : . If franked article is found in letter box a) This should not be transmitted and returned to the sender b) It is to be treated as unpaid article and send to its destination in normal manner. c) Taxed double value

Last Answer : b) It is to be treated as unpaid article and send to its destination in normal manner

Which one of the following allows a user at one site to establish a connection to another site and then pass keystrokes from local host to remote host? a.HTTP b.FTP c.Telnet d.TCP

Description : Which one of the following allows a user at one site to establish a connection to another site and then pass keystrokes from local host to remote host? a.HTTP b.FTP c.Telnet d.TCP

Last Answer : c.Telnet

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

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

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

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

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

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

Last Answer : A. SMTP

In packet-filtering router, the following information can be external from the packet header. i) Source IP address ii) Destination IP address iii) TCP/UDP source port iv) ICMP message type v) TCP/UDP destination port A) i, ii, iii and iv only B) i, iii, iv and v only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Description : In packet-filtering router, the following information can be external from the packet header. i) Source IP address ii) Destination IP address iii) TCP/UDP source port iv) ICMP message type v) TCP/UDP destination port A) i, ii, ... iv and v only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Last Answer : D) All i, ii, iii, iv and v

In packet-filtering router, the following information can be external from the packet header. i) Source IP address ii) Destination IP address iii) TCP/UDP source port iv) ICMP message type v) TCP/UDP destination port A) i, ii, iii and iv only B) i, iii, iv and v only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Description : In packet-filtering router, the following information can be external from the packet header. i) Source IP address ii) Destination IP address iii) TCP/UDP source port iv) ICMP message type v) TCP/UDP destination port A) i, ii ... and v only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Last Answer : D) All i, ii, iii, iv and v

Inthe ________method, a stationthat has a frame tosend senses the line. If the line is idle, it sends immediately. If theline is not idle, it waits a random amount of time and then senses the line again. A) nonpersistent B) 1-persistent C) p-persistent D) none of the above

Description : Inthe ________method, a stationthat has a frame tosend senses the line. If the line is idle, it sends immediately. If theline is not idle, it waits a random amount of time and then senses the line again. A) nonpersistent B) 1-persistent C) p-persistent D) none of the above

Last Answer : nonpersistent

The term 'duplex' refers to theability of the data receiving stations toecho back aconfirming messageto the sender. Infull duplex data transmission, both the sender and the receiver A. cannot talk at once B. can receive and send datasimultaneously C. can sendor receive data one ata time D. can do one way data transmission only E. None of the above

Description : The term 'duplex' refers to theability of the data receiving stations toecho back aconfirming messageto the sender. Infull duplex data transmission, both the sender and the receiver A. cannot talk at once B. can ... data one ata time D. can do one way data transmission only E. None of the above

Last Answer : can do one way data transmission only

. ________ is the process in which the receiver tries to guess the message by using redundant bits A. Connection-Oriented Service B. Forward error correctionC. both a and b D. Confirm

Description : . ________ is the process in which the receiver tries to guess the message by using redundant bits A. Connection-Oriented Service B. Forward error correction C. both a and b D. Confirm

Last Answer : B. Forward error correction

Is sending email through an SMTP server on the same machine as my web application more or less efficient than using PHP mail()?

Description : Is sending email through an SMTP server on the same machine as my web application more or less efficient than using PHP mail()?

Last Answer : I’m confused by your question. Wouldn’t PHP mail() ultimately be using whatever SMTP server you use to send mail?

What is used to see if a client is still connected to a NetWare server? A. Spoofing TCP/SAP B. Watchdog packet C. GNS Round Robin D. DNS Round Robin

Description : What is used to see if a client is still connected to a NetWare server? A. Spoofing TCP/SAP B. Watchdog packet C. GNS Round Robin D. DNS Round Robin

Last Answer : Watchdog packet

What cangreatly reduce TCP/IP configuration problems? A. WINS Server B. WINS Proxy C. DHCP Server D. PDC E. None of the above

Description : What cangreatly reduce TCP/IP configuration problems? A. WINS Server B. WINS Proxy C. DHCP Server D. PDC E. None of the above

Last Answer : DHCP Server

What are the problems involved in an IP Fragmentation Process? A. Loss of any fragment results in rejection of all datagrams B. Management of buffer space is essential to handle reassembly process C. No necessity of initializing the timer after the reception of initial fragment D. Multiple attempts can be made to recover ICMP error message due to connection-oriented IP service a. A & B b. C & D c. B& C d. A & D

Description : What are the problems involved in an IP Fragmentation Process? A. Loss of any fragment results in rejection of all datagrams B. Management of buffer space is essential to handle reassembly process C. No necessity of initializing ... -oriented IP service a. A & B b. C & D c. B& C d. A & D

Last Answer : a. A & B

ICMP (Internet Control Message Protocol) is A. a TCP/IP protocol used todynamically bind ahigh level IP Address to alow-level physical hardware address B. a TCP/IP high level protocol for transferring filesfrom one machine to another C. a protocol used to monitor computersD.a protocol that handles error andcontrol messagesE.None of the above

Description : ICMP (Internet Control Message Protocol) is A. a TCP/IP protocol used todynamically bind ahigh level IP Address to alow-level physical hardware address B. a TCP/IP high level protocol for transferring ... to monitor computers D. a protocol that handles error andcontrol messages E. None of the above

Last Answer : a protocol that handles error andcontrol messages

The data unit in the TCP/IP layer called a ..... A) Message B) Segment C) Datagram D) Frame

Description : The data unit in the TCP/IP layer called a ..... A) Message B) Segment C) Datagram D) Frame

Last Answer : D) Frame

Consider the following statements. I. TCP connections are full duplex. II. TCP has no option for selective acknowledgment III. TCP connections are message streams. a. Only I is correct b. Only I and II are correct c. Only II and III are correct d. All of I, II and III are correct

Description : Consider the following statements. I. TCP connections are full duplex. II. TCP has no option for selective acknowledgment III. TCP connections are message streams. a. Only I is correct b. Only I and II are correct c. Only II and III are correct d. All of I, II and III are correct

Last Answer : a. Only I is correct

State weather the following statement is true or false for Stream Control Transmission Protocol (SCTP). 1). SCTP uses only few known ports in the TCP space. 2).SCTP is a new transport protocol at the same layer as TCP and UDP. 3). SCTP is a new reliable, message oriented transport layer protocol. A. 1. True, 2. true, 3. true B. 1. true, 2. false, 3. false C. 1. false, 2. false, 3. false D. 1.false, 2. true, 3. true

Description : State weather the following statement is true or false for Stream Control Transmission Protocol (SCTP). 1). SCTP uses only few known ports in the TCP space. 2).SCTP is a new transport protocol at the same layer as TCP and ... , 3. false C. 1. false, 2. false, 3. false D. 1.false, 2. true, 3. true

Last Answer : D. 1.false, 2. true, 3. true

_______ inthe data link layer separates a message from one source toa destination, or from other messages going from other sources to other destinations. A) Digitizing B) Controlling C) Framing D) none of the above

Description : _______ inthe data link layer separates a message from one source toa destination, or from other messages going from other sources to other destinations. A) Digitizing B) Controlling C) Framing D) none of the above

Last Answer : Framing

A multicast message is sent from _______ to _______. A) onesource; one destination B) onesource; multiple destinations C) multiple sources; onedestination D) noneof the above

Description : A multicast message is sent from _______ to _______. A) onesource; one destination B) onesource; multiple destinations C) multiple sources; onedestination D) noneof the above

Last Answer : onesource; multiple destinations

Consider the assertions given below. Which among them prove to be beneficial for Persistent HTTP connections? A. Reduction in latency over the sub- sequent requests B. Pipeline-oriented connection over the requests and responses C. Increase in number of packets due to TCP opens D. Prevention in opening and closing of some TCP connections a. A & B b. C & D c. A & C d. B & B

Description : Consider the assertions given below. Which among them prove to be beneficial for Persistent HTTP connections? A. Reduction in latency over the sub- sequent requests B. Pipeline-oriented connection over the requests and responses C. Increase ... TCP connections a. A & B b. C & D c. A & C d. B & B

Last Answer : a. A & B