IS 127 Internet Foundation (HU) Midterms Exam Review 2025 (Qns & Ans

IS 127

Internet Foundation

Midterms Exam Review (Qns & Ans)

2025



1. What is the primary purpose of the Domain Name System
(DNS)?
A. To assign IP addresses to devices
B. To translate human-readable domain names into IP addresses
C. To route data packets across the Internet
D. To manage web server load balancing
- ANS: B. To translate human-readable domain names into
IP addresses
- Rationale: DNS maps domain names (e.g.,
www.example.com) to IP addresses, enabling users to access
resources without remembering numerical IPs.
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,2. Which protocol is primarily responsible for reliable data
transmission on the Internet?
A. TCP
B. UDP
C. FTP
D. ICMP
- ANS: A. TCP
- Rationale: The Transmission Control Protocol (TCP)
ensures reliable data delivery through error checking and
retransmission.


3. What is the main advantage of using HTTPS over HTTP?
A. Faster web page loading
B. Secure encryption of data between client and server
C. Improved SEO rankings for websites
D. Elimination of packet loss
- ANS: B. Secure encryption of data between client and
server
- Rationale: HTTPS encrypts data using TLS/SSL, protecting
sensitive information from eavesdropping or interception.


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,4. Which Internet layer protocol is used to route packets across
networks?
A. DHCP
B. IP
C. SMTP
D. HTTP
- ANS: B. IP
- Rationale: The Internet Protocol (IP) handles packet
routing, ensuring data reaches its destination across
interconnected networks.


5. What is the primary function of a content delivery network
(CDN)?
A. To increase server storage capacity
B. To cache and distribute web content closer to users for
improved performance
C. To manage Internet Protocol (IP) addresses
D. To secure web applications from cyberattacks
- ANS: B. To cache and distribute web content closer to
users for improved performance
- Rationale: CDNs enhance website speed and reliability by
caching content at strategically distributed servers.


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Fill-in-the-Blank Questions
6. __________ is a protocol used to send email messages
between servers on the Internet.
- ANS: SMTP
- Rationale: The Simple Mail Transfer Protocol (SMTP)
facilitates the transmission of emails between servers.


7. The __________ protocol is designed to retrieve and display
web pages from servers to clients.
- ANS: HTTP
- Rationale: The HyperText Transfer Protocol (HTTP) is
responsible for transferring web content, such as text, images, and
multimedia.


8. __________ is the process of dividing a large network into
smaller, more manageable sub-networks.
- ANS: Subnetting
- Rationale: Subnetting improves network performance and
security by segmenting IP addresses into subnets.




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