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4.4.14.3 IMAP
.. ( )

IMAP 4.1
A.

IMAP 4.1 (INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1, V.Crispin, RFC-2060, December 1996) TCP 143. IMAP 993. IMAP POP-3. - .


POP3 IMAP ( ).

Expert Ielts 75 Coursebook Answer Key Pdf Work

IMAP 4.1 . , . , , , CRLF. ( ) , .

Expert Ielts 75 Coursebook Answer Key Pdf Work

. - ( - , A0001, A0002 ..), (tag). . , , , . - , (. ). - (. authenticate). , . "+".

: , , , bad , - .

( ) . , , . .

IMAP 4.1 , , , . .

Expert Ielts 75 Coursebook Answer Key Pdf Work

, , , , "*" .

. .

. , , . , , , . : ok ( ), no ( ) bad ( , , ).

IMAP 4.1 . , "*" "+".

. , . , , .

. .

IMAP 4.1 .

Expert Ielts 75 Coursebook Answer Key Pdf Work

32- , 64- , . , UID, .

, , . [IMAP-DISC].

UID uidvalidity (ok) . UID - , UID .


UID . IMAP, UID , UID .

UID . , UID. UID 32- . 1, , , .

UID , . UID , , UID .

, 1. 1 , .

. , , . , .

, . , 287 , 523 , UID 12345, 286 , UID 236 UID.

Expert Ielts 75 Coursebook Answer Key Pdf Work

, . . IMAP 4.1. .

, . "\". (\deleted \seen) , . :

\seen
\answered
\flagged "" ,
\deleted expunge
\draft (, ).
\recent . , ; \recent. .

, , . . "\". . ; , .


\recent . \recent store, .

. , [RFC-822], . [SMTP], . , IMAP 4.1 copy, . IMAP 4.1 append, , append.

( [RFC-822]). [RFC-822]. [MIME-IMB]. , RFC-822, IMAP 4.1 . .

Expert Ielts 75 Coursebook Answer Key Pdf Work

IMAP 4.1 . . , . bad no .

, . , .

, . , .

, . .


expert ielts 75 coursebook answer key pdf work

. 4.4.14.2.1. IMAP

(1) C ( OK)
(2) C ( PREAUTH)
(3) ( BYE)
(4) LOGIN AUTHENTICATE
(5) SELECT EXAMINE
(6) CLOSE, SELECT EXAMINE
(7) LOGOUT, ,

Expert Ielts 75 Coursebook Answer Key Pdf Work

IMAP 4.1 . IMAP 4.1 : , , , , NIL.

.

.

: . . , , , .

( CR LF). , . , CRLF. CRLF . , .

7- CR LF, (<">). "" {0}, CRLF.

: , , .

Expert Ielts 75 Coursebook Answer Key Pdf Work

8- [MIME-IMB]. IMAP 4.1 8- , , [CHARSET]. BINARY, . " " - NUL . , BASE64, . CTL .

Expert Ielts 75 Coursebook Answer Key Pdf Work

, , . . () - .

Expert Ielts 75 Coursebook Answer Key Pdf Work

"NIL" - . "" ().

Expert Ielts 75 Coursebook Answer Key Pdf Work

. INBOX , " " ( ). . , .

Expert Ielts 75 Coursebook Answer Key Pdf Work

, "#" . , , USENET "#news", . , comp.mail.misc "#news.comp.mail.misc", "comp.mail.misc" (., ).

Expert Ielts 75 Coursebook Answer Key Pdf Work

UTF-7, [UTF-7]. , UTF-7:

  1. UTF-7 "+" ; "+" , USENET.
  2. UTF-7 BASE64, "/", "/" .
  3. UTF-7 "\"; "\" .
  4. UTF-7 "~", , , (home).
  5. UTF-7 , , US-ASCII .

UTF-7, US-ASCII "&" ; , 0x20-0x25 0x27-0x7e. "&" (0x26) "&-". ( 0x00-0x1f, 0x7f-0xff, 16- ) BASE64, [UTF-7]. BASE64 US-ASCII, .

"&" BASE64 "-" US-ASCII. US-ASCII, US-ASCII ( , , 16- , "-"). , , : ~peter/mail/&ZeVnLIqe-/&U,BTFw-

Expert Ielts 75 Coursebook Answer Key Pdf Work

, . , . , , , , (, ), . , . , . , ( EXPUNGE). . , .

Expert Ielts 75 Coursebook Answer Key Pdf Work

( EXPUNGE), . , , . , (1) , , (2) .

Expert Ielts 75 Coursebook Answer Key Pdf Work

, , , 30 . .

Expert Ielts 75 Coursebook Answer Key Pdf Work

, , .

, . , , - . , .

, , FETCH STORE .

, EXPUNGE ( FETCH, STORE SEARCH), EXPUNGE . FETCH, STORE SEARCH, EXPUNGE, . , , FETCH, STORE SEARCH, , , . , ( ) :

FETCH + NOOP + STORE
STORE + COPY + FETCH
COPY + COPY
CHECK + FETCH

, :

FETCH + STORE + SEARCH + CHECK
STORE + COPY + EXPUNGE

Expert Ielts 75 Coursebook Answer Key Pdf Work

IMAP 4.1. , .

Expert Ielts 75 Coursebook Answer Key Pdf Work

: CAPABILITY, NOOP LOGOUT.

5.1.1. CAPABILITY

: .
: : CAPABILITY.
: OK - ;
BAD - <./p>

CAPABILITY , . CAPABILITY "IMAP 4.1" , OK. . , CAPABILITY . , "AUTH=" , . . , "blurdybloop" "AUTH=XBLURDYBLOOP", "XAUTH=BLURDYBLOOP" "XAUTH=XBLURDYBLOOP".

, .

: C: abcd CAPABILITY
S: * CAPABILITY IMAP 4.1 AUTH=KERBEROS_V4
S: abcd OK CAPABILITY completed

5.1.2. NOOP

: .
: .
: OK - ;
BAD - ;
NOOP .

, NOOP , . NOOP - .

: C: a002 NOOP
S: a002 OK NOOP completed
. . .
C: a047 NOOP
S: * 22 EXPUNGE
S: * 23 EXISTS
S: * 3 RECENT
S: * 14 FETCH (FLAGS (\Seen \Deleted))
S: a047 OK NOOP completed

5.1.3. LOGOUT

: .
: BYE.
: OK - ;
BAD - .

LOGOUT , . BYE, OK, .

: C: A023 LOGOUT
S: * BYE IMAP 4.1 Server logging out
S: A023 OK LOGOUT completed
( )

Expert Ielts 75 Coursebook Answer Key Pdf Work

, AUTHENTICATE LOGIN . IMAP RFC-1731. AUTHENTICATE , LOGIN .

. LOGIN "anonymous". . .

. (CAPABILITY, NOOP LOGOUT), : AUTHENTICATE LOGIN.

5.2.1. AUTHENTICATE

: .
: .

OK , " ";
NO : , ;
BAD , .

AUTHENTICATE , [IMAP-AUTH]. , . . , AUTHENTICATE NO.

. - "+", BASE64. , BASE64. , , "*". , AUTHENTICATE, BAD.

. , , . CRLF, , CRLF OK . , . , , . - .

. ; - . AUTHENTICATE NO, , AUTHENTICATE, LOGIN. , , LOGIN .

: S: * OK KerberosV4 IMAP4rev1 Server
C: A001 AUTHENTICATE KERBEROS_V4
S: + AmFYig==
C: BAcAQU5EUkVXLkNNVS5FRFUAOCAsho84kLN3/IJmrMG+25a4DT
+nZImJjnTNHJUtxAA+o0KPKfHEcAFs9a3CL5Oebe/ydHJUwYFd
WwuQ1MWiy6IesKvjL5rL9WjXUb9MwT9bpObYLGOKi1Qh
S: + or//EoAADZI=
C: DiAF5A4gA+oOIALuBkAAmw==
S: A001 OK Kerberos V4 authentication successful

5.2.2. LOGIN

: , .
: - .
: OK - login , ;
NO - login : ;
BAD - .

LOGIN .

: C: a001 LOGIN SMITH SESAME
S: a001 OK LOGIN completed

Expert Ielts 75 Coursebook Answer Key Pdf Work

" " , -. SELECT EXAMINE "" .

(CAPABILITY, NOOP LOGOUT), " " : SELECT, EXAMINE, CREATE, DELETE, RENAME, SUBSCRIBE, UNSUBSCRIBE, LIST, LSUB, STATUS APPEND.

5.3.1. SELECT

: .
: : FLAGS, EXISTS, RECENT;
OK: UNSEEN, PERMANENTFLAGS.

: OK - , "";
NO - : , ;
BAD - .

SELECT , , . OK, :

FLAGS - , .
<n> EXISTS .
<n> RECENT \Recent.
OK [UIDVALIDITY <n> ] .

"" OK, .

, FLAGS, OK PERMANENTFLAGS, , .

. . SELECT . , , SELECT , . , OK "[READ-WRITE]".

, , " " OK SELECT "[READ-ONLY]". " " , EXAMINE, . .newsrc , " ".

: C: A142 SELECT INBOX
S: * 172 EXISTS
S: * 1 RECENT
S: * OK [UNSEEN 12] Message 12 is first unseen
S: * OK [UIDVALIDITY 3857529045] UIDs valid
S: * FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
S: * OK [PERMANENTFLAGS (\Deleted \Seen \*)] Limited
S: A142 OK [READ-WRITE] SELECT completed

5.3.2. EXAMINE

: .
: : FLAGS, EXISTS, RECENT;
OK: UNSEEN, PERMANENTFLAGS.

: OK , " " ;
NO , " "; ; ;
BAD .

EXAMINE SELECT , , " ". . OK EXAMINE "[READ-ONLY]".

: C: A932 EXAMINE blurdybloop
S: * 17 EXISTS
S: * 2 RECENT
S: * OK [UNSEEN 8] Message 8 is first unseen
S: * OK [UIDVALIDITY 3857529045] UIDs valid
S: * FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
S: * OK [PERMANENTFLAGS ()] No permanent flags permitted
S: A932 OK [READ-ONLY] EXAMINE completed

5.3.3. CREATE

: .
: - .

OK ;
NO : ;
BAD .

CREATE . OK , . INBOX , , . NO.

( , LIST), . , , .

- - , , CREATE. , "foo/bar/zap" , "/" , foo/ foo/bar/, .

, , , UID.

: C: A003 CREATE owatagusiam/
S: A003 OK CREATE completed
C: A004 CREATE owatagusiam/blurdybloop
S: A004 OK CREATE completed

: , "/" . "/" , "owatagusiam" "blurdybloop". .

5.3.4. DELETE

: .
: - .
: OK - ;
NO - : ;
BAD - .

DELETE . OK , . INBOX .

DELETE , . , "foo" "foo.bar" (, "." ), "foo" "foo.bar". , , \Noselect.

, , \Noselect. , \Noselect.

, , UID.

: C: A682 LIST "" *
S: * LIST () "/" blurdybloop
S: * LIST (\Noselect) "/" foo
S: * LIST () "/" foo/bar
S: A682 OK LIST completed
C: A683 DELETE blurdybloop
S: A683 OK DELETE completed
C: A684 DELETE foo
S: A684 NO Name "foo" has inferior hierarchical names
C: A685 DELETE foo/bar
S: A685 OK DELETE Completed
C: A686 LIST "" *
S: * LIST (\Noselect) "/" foo
S: A686 OK LIST completed
C: A687 DELETE foo
S: A687 OK DELETE Completed
C: A82 LIST "" *
S: * LIST () "." blurdybloop
S: * LIST () "." foo
S: * LIST () "." foo.bar
S: A82 OK LIST completed
C: A83 DELETE blurdybloop
S: A83 OK DELETE completed
C: A84 DELETE foo
S: A84 OK DELETE Completed
C: A85 LIST "" *
S: * LIST () "." foo.bar
S: A85 OK LIST completed
C: A86 LIST "" %
S: * LIST (\Noselect) "." foo
S: A86 OK LIST completed

5.3.5. RENAME

: , .
: - .

: OK ;
NO : , ;
BAD .

RENAME . OK , . . NO.

, . , "foo" "zap" "foo/bar" (, "/" ) "zap/bar".

, , UID.

INBOX , . , INBOX . INBOX, INBOX.

: C: A682 LIST "" *
S: * LIST () "/" blurdybloop
S: * LIST (\Noselect) "/" foo
S: * LIST () "/" foo/bar
S: A682 OK LIST completed
C: A683 RENAME blurdybloop sarasoop
S: A683 OK RENAME completed
C: A684 RENAME foo zowie
S: A684 OK RENAME Completed
C: A685 LIST "" *
S: * LIST () "/" sarasoop
S: * LIST (\Noselect) "/" zowie
S: * LIST () "/" zowie/bar
S: A685 OK LIST completed
C: Z432 LIST "" *
S: * LIST () "." INBOX
S: * LIST () "." INBOX.bar
S: Z432 OK LIST completed
C: Z433 RENAME INBOX old-mail
S: Z433 OK RENAME completed
C: Z434 LIST "" *
S: * LIST () "." INBOX
S: * LIST () "." INBOX.bar
S: * LIST () "." old-mail
S: Z434 OK LIST completed

5.3.6. SUBSCRIBE

: .
: - .
: OK - ;
NO - : ;
BAD - .

SUBSCRIBE "" "" , LSUB. OK .

SUBSCRIBE, . , .

: , , , "system-alerts") , .

: C: A002 SUBSCRIBE #news.comp.mail.mime
S: A002 OK SUBSCRIBE completed

5.3.7. UNSUBSCRIBE

: .
: - .
: OK - ;
NO - : ;
BAD - .

UNSUBSCRIBE "" "" , LSUB. OK , .

: C: A002 UNSUBSCRIBE #news.comp.mail.mime
S: A002 OK UNSUBSCRIBE completed

5.3.8. LIST

: ,
(wildcard).
: LIST.

: OK list ;
NO : list ;
BAD .

LIST , . LIST, , .

LIST . , (\Marked \Unmarked) , , 1200 20 .

, (""), , , SELECT. . , . ("") , . , , , . . , , .

- . .

, , . , . , . , .

, UNIX:

~smith/Mail/ foo.* ~smith/Mail/foo.*
Archive/ % archive/%
#news. comp.mail.* #news.comp.mail.*
~smith/Mail/ /usr/doc/foo /usr/doc/foo
archive/ ~fred/Mail/* ~fred/Mail/*

. , "~smith/Mail" - "/u2/users/smith/Mail", , .

"*" (wildcard), . "%" "*", . "%" , . , , \Noselect. , (wildcard). , UNIX "*" , "/" .

INBOX LIST, INBOX , "INBOX", , .

: C: A101 LIST "" ""

S: * LIST (\Noselect) "/" ""
S: A101 OK LIST Completed
C: A102 LIST #news.comp.mail.misc ""
S: * LIST (\Noselect) "." #news.
S: A102 OK LIST Completed
C: A103 LIST /usr/staff/jones ""
S: * LIST (\Noselect) "/" /
S: A103 OK LIST Completed
C: A202 LIST ~/Mail/ %
S: * LIST (\Noselect) "/" ~/Mail/foo
S: * LIST () "/" ~/Mail/meetings
S: A202 OK LIST completed

5.3.9. LSUB

: -,
(wildcards).
: : LSUB

: OK ;
NO : ;
BAD .

LSUB , "" "". LSUB. LSUB , LIST.

, , . , LSUB \Noselect. , .

: C: A002 LSUB "#news." "comp.mail.*"
S: * LSUB () "." #news.comp.mail.mime
S: * LSUB () "." #news.comp.mail.misc
S: A002 OK LSUB completed

5.3.10. STATUS

: , .
: : STATUS.
: OK - ;
NO - : ;
BAD - .

STATUS . - ( STATUS \Recent).

STATUS IMAP 4.1 EXAMINE , , .

LIST, STATUS . " ", . , STATUS . , :

MESSAGES
RECENT \Recent
UIDNEXT , . , , . UID , .
UIDVALIDITY
UNSEEN , \Seen

: C: A042 STATUS blurdybloop (UIDNEXT MESSAGES)
S: * STATUS blurdybloop (MESSAGES 231 UIDNEXT 44292)
S: A042 OK STATUS completed

5.3.11. APPEND

: ,
- ,
- ,

: -

: OK
NO : , /,
BAD

APPEND . [RFC-822]. 8- . , 8- , 8- APPEND 7-, [MIME-IMB]. , , .

date_time, , , . append - , , APPEND.

, , . , , "[TRYCREATE]" NO. CREATE, , , APPEND.

, . , EXISTS. , APPEND NOOP ( CHECK).

: C: A003 APPEND saved-messages (\Seen) {310}
C: Date: Mon, 7 Feb 1994 21:52:25 -0800 (PST)
C: From: Fred Foobar
C: Subject: afternoon meeting
C: To: mooch@owatagu.siam.edu
C: Message-Id:
C: MIME-Version: 1.0
C: Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
C:
C: Hello Joe, do you think we can meet at 3:30 tomorrow?
C:
S: A003 OK APPEND completed

: APPEND , [SMTP].

Expert Ielts 75 Coursebook Answer Key Pdf Work

" ", , . (CAPABILITY, NOOP LOGOUT), (SELECT, EXAMINE, CREATE, DELETE, RENAME, SUBSCRIBE, UNSUBSCRIBE, LIST, LSUB, STATUS APPEND), : CHECK, CLOSE, EXPUNGE, SEARCH, FETCH, STORE, COPY UID.

5.4.1. CHECK

: .
: - ;
: OK - ;
BAD - .

CHECK . , (, ). , NOOP.

, CHECK . NOOP, CHECK.

: C: FXXZ CHECK
S: FXXZ OK CHECK Completed

5.4.2. CLOSE

: .
: - .
: OK - , " ";
NO - , ;
BAD - .

CLOSE , \Deleted, " ". EXPUNGE .

, EXAMINE " ".

, SELECT, EXAMINE LOGOUT CLOSE. SELECT, EXAMINE LOGOUT . , CLOSE-LOGOUT CLOSE-SELECT , EXPUNGE-LOGOUT EXPUNGE-SELECT, EXPUNGE ( ).

: C: A341 CLOSE
S: A341 OK CLOSE completed

5.4.3. EXPUNGE

: .
: : EXPUNGE.
: OK - ;
NO - : (, );
BAD - .

EXPUNGE , \Deleted. OK, EXPUNGE .

: C: A202 EXPUNGE
S: * 3 EXPUNGE
S: * 3 EXPUNGE
S: * 5 EXPUNGE
S: * 8 EXPUNGE
S: A202 OK EXPUNGE completed

: , 3, 4, 7 11 \Deleted. , .

5.4.4. SEARCH

: , [CHARSET]-.
( ).
: : SEARCH.
: OK - ;
NO - : ;
BAD -

SEARCH , . . SEARCH , .

, ( AND) , . , DELETED FROM "SMITH" SINCE 1-Feb-1994 , 1- 1994. (, OR NOT).

[CHARSET] "CHARSET", [CHARSET]. [CHARSET] , . [MIME-IMB] [MIME-HDRS] [RFC-822]/[MIME-IMB] , [CHARSET], US-ASCII. US-ASCII , . [CHARSET], NO ( BAD).

, , , . . .

< > ,
ALL . AND
ANSWERED \Answered.
BCC <> , BCC .
BEFORE <> , .
BODY <> , .
CC <> , CC .
DELETED \Deleted.
DRAFT \Draft.
FLAGGED c \Flagged.
FROM <> , FROM .
HEADER < > <> , ( [RFC-822]) .
KEYWORD <> .
LARGER <n> [RFC-822] .
NEW , \Recent, \Seen. "(RECENT UNSEEN)".
NOT < > , .
OLD , \Recent. "NOT RECENT" ( "NOT NEW").
ON <> , .
OR < 1> < 2> , .
RECENT , \Recent.
SEEN , \Seen.
SENTBEFORE <> , , [RFC-822].
SENTON <> , , [RFC-822]
SENTSINCE <> , , [RFC-822]: .
SINCE <> , .
SMALLER <n> [RFC-822] .
SUBJECT <> , SUBJECT .
TEXT <> ,
TO <> , TO.
UID < > , .
UNANSWERED <>, \Answered.
UNDELETED , \Deleted.
UNDRAFT , \Draft.
UNFLAGGED , \Flagged.
UNKEYWORD <> , .
UNSEEN , \Seen.

: C: A282 SEARCH FLAGGED SINCE 1-Feb-1994 NOT FROM "Smith"
S: * SEARCH 2 84 882
S: A282 OK SEARCH completed

5.4.5. FETCH

: ,
.
: : FETCH
: OK - ;
NO - : ;
BAD - .

FETCH , . , . , :

ALL : (FLAGS INTERNALDATE RFC822.SIZE ENVELOPE)
BODY BODYSTRUCTURE.
BODY[

Expert Ielts 75 Coursebook Answer Key Pdf Work

The Expert IELTS 7.5 Coursebook , published by Pearson , is an intensive preparation tool designed specifically for students aiming to bridge the gap between Band 6.0 and Band 7.5+. While the Coursebook itself focuses on training and practice, the "Answer Key" is typically a separate component found in the Student's Resource Book with Key or the Teacher's Book . Key Features of the Coursebook

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The Expert series by Pearson is a well-regarded staple in IELTS preparation. It is designed to take students who are already competent and polish their skills to reach advanced levels. The "7.5" band is notoriously difficult to achieve; it requires a candidate to move beyond simple grammatical correctness into the realms of nuance, collocation, and complex argumentation. expert ielts 75 coursebook answer key pdf work

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If you're working through the Expert IELTS 7.5 Coursebook, you already know it’s one of the most rigorous resources for pushing your score from a 7 to an 8 or 9. But there’s a common question that pops up in every study group: "Where can I find the answer key in PDF format?"

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