Article trap — "an HTTP request" (aitch), but "a URL" (you)
Casual forms — URL "earl" is informal; prefer "YOU-ARE-ELL"
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How is NAT (Network Address Translation) pronounced by network engineers?
NAT is said as a word: "nat" /næt/.
The letters form a natural English syllable, so NAT is pronounced like the name "Nat" or the word in "gnat", rhyming with "cat".
Typical collocations: NAT gateway, set up port NAT, NAT traversal, behind a NAT. You will also hear the derived term NAT-ing ("natting") as a verb. Note it is not "nate" (long A) and definitely not spelled out letter by letter — saying "EN-AY-TEE" would sound odd to any network professional. This contrasts with DNS in the same field, which is spelled out because "dns" has no vowel and cannot form a syllable.
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How are HTTP and HTTPS pronounced?
HTTP and HTTPS are spelled out letter by letter.
HTTP — "AITCH-TEE-TEE-PEE" /eɪtʃ tiː tiː piː/. In British English the first letter is "aitch"; some American speakers say "haitch", but "aitch" is the standard.
HTTPS — same plus a final "ESS": "AITCH-TEE-TEE-PEE-ESS".
Collocations: over HTTP, an HTTP request, force HTTPS, redirect to HTTPS. Note the article: because it begins with the vowel sound "aitch", you say "an HTTP request", not "a HTTP request". The full string is never compressed into a word — there is no vowel to anchor a syllable.
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How are SSL and TLS pronounced in security and networking discussions?
TLS is the modern successor to SSL, but engineers still loosely say "SSL" for both. Common collocations: an SSL certificate (often shortened to an SSL cert), terminate TLS, the TLS handshake, mutual TLS / mTLS ("em-tee-ell-ess"). Neither folds into a word; each consonant cluster lacks a vowel to build a syllable around, so the letter-by-letter form is universal.
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How are LAN and WAN pronounced?
LAN and WAN are said as words.
LAN /læn/ — "lan", rhyming with "can" (Local Area Network)
WAN /wɒn/ — "wan", sounding like the word "wan" / "swan" without the s (Wide Area Network)
Each forms a clean consonant-vowel-consonant syllable, so neither is spelled out. Collocations: on the LAN, a wired LAN, WAN link, SD-WAN ("ess-dee-wan"). Compare with MAC address ("mack") and VLAN ("vee-lan" — a hybrid, "V" letter plus the word "lan"). The short A in both LAN and WAN should be crisp, not lengthened to "lane" or "wane".
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A teammate references the URI and URL for a resource. How are these typically pronounced?
URI and URL are normally spelled out.
URI — "YOU-ARE-EYE" /juː ɑːr aɪ/ (Uniform Resource Identifier)
These are the dominant, unambiguous forms. You will occasionally hear URL pronounced "earl" /ɜːrl/ as a casual one-syllable form, but it is informal and can be misheard — "YOU-ARE-ELL" is the safe choice in interviews and presentations. "URI" is almost never said "your-ee" professionally. Collocations: parse the URL, a relative URI, the request URI, URL-encode the value. Note the article: "a URL" (the "y" sound of "you" is a consonant sound), not "an URL".