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Software Quality Assurance ensures software meets specified requirements and quality standards. This involves systematic testing approaches, defect tracking, and validation procedures to identify issues before release.

Question 2 Easy Mcq

✓ Correct ✗ Incorrect

What is binary 00011000.01001100.01111001.00001010 equivalent to in Decimal?

24.67.121.11

24.76.211.10

24.77.121.10

24.76.121.10

Explanation:

The correct answer is '24.76.121.10'. This aligns with standard TCP/IP concepts and best practices.

Question 3 Easy Mcq

✓ Correct ✗ Incorrect

What is the network ID of IP address 172.30.60.0/20?

172.30.16.0

172.30.48.0

172.30.32.0

172.30.0.0

Explanation:

The network ID of 172.30.60.0/20 is 172.30.48.0. With a /20 mask (255.255.240.0), the third octet uses the upper 4 bits for network and lower 4 bits for host. 60 in binary is 00111100, and masking with 11110000 gives 00110000 (48).

Question 4 Easy Mcq

✓ Correct ✗ Incorrect

What is the class of IP address 128.10.15.24?

Class A

Class B

Class C

Class D

Explanation:

This question covers core TCP/IP networking concepts essential for understanding network configuration, troubleshooting, and design. Understanding IP addressing, subnetting, and protocols is fundamental for network engineers.

Question 5 Easy Mcq

✓ Correct ✗ Incorrect

What is the maximum number of usable subnets that you can create in a class B network?

32768

65536

16384

Infinite

Explanation:

Subnetting divides a large network into smaller, more manageable segments. This improves network efficiency, security, and address utilization. The subnet mask determines the network and host portions of an IP address.

Question 6 Easy Mcq

✓ Correct ✗ Incorrect

What is the top-most level of the Internet domain name hierarchy called?

Zone

Internet domain name

The root domain

Reverse-lookup zone domain

Explanation:

The top-most level of the Internet domain name hierarchy is called the root domain. It's represented by a dot (.) at the end of a domain name, though it's typically implicit rather than explicitly written.

Question 7 Easy Mcq

✓ Correct ✗ Incorrect

What is the purpose of the metric value in a routing table?

It specifies the number of entries in the routing table

It specifies the IP address of the router

It specifies the default gateway address

It is used to find the best route to the desired network

Explanation:

Question 8 Easy Mcq

✓ Correct ✗ Incorrect

Layer 4 of the OSI model contains the TCP and UDP protocols, what is FALSE about UDP?

Does not contain any port numbers

Low overhead

Unreliable

Stands for User Datagram Protocol

Explanation:

The correct answer is 'Does not contain any port numbers'. This aligns with standard TCP/IP concepts and best practices.

Question 9 Easy Mcq

✓ Correct ✗ Incorrect

What is the telecommunication protocol that all computers must use to be part of the Internet.

TCP

ARP

UDP

Explanation:

The correct answer is 'IP'. This aligns with standard TCP/IP concepts and best practices.

Question 10 Easy Mcq

✓ Correct ✗ Incorrect

What is the maximum size of RIP datagrams?

256 octet

64 octet

512 octet

128 octet

Explanation:

The correct answer is '512 octet'. This aligns with standard TCP/IP concepts and best practices.

Question 11 Easy Mcq

✓ Correct ✗ Incorrect

What is the port number used by HTTP?

112

Explanation:

Question 12 Easy Mcq

✓ Correct ✗ Incorrect

What is the binary value of 157?

11000111

10111001

11100011

10011101

Explanation:

Question 13 Easy Mcq

✓ Correct ✗ Incorrect

What is the maximum number of valid IP addresses in a class C network?

256

512

65536

254

Explanation:

IP address classes define different network sizes. Class A (1-126.x.x.x) has 8 network bits, Class B (128-191.x.x.x) has 16 network bits, Class C (192-223.x.x.x) has 24 network bits, and Class D (224-239.x.x.x) is for multicast.

Question 14 Easy Mcq

✓ Correct ✗ Incorrect

Based on the provided answers, what is the best INCORRECT answer for ICMP?

ICMP stands for the Internet Control Message Protocol

If an ICMP packet is dropped, a new ICMP packet will be generated

The primary function of ICMP is for error notification between routers and hosts

ICMP is encapsulated in IP packets

Explanation:

The correct answer is 'If an ICMP packet is dropped, a new ICMP packet will be generated'. This aligns with standard TCP/IP concepts and best practices.

Question 15 Easy Mcq

✓ Correct ✗ Incorrect

What is the maximum life time of an entry in the Dynamic ARP cache?

2 minutes

As specified by the system administrator

ARP entries are permanent

10 minutes

Explanation:

The maximum lifetime of a dynamic ARP cache entry is typically 10 minutes. After this period, if the entry hasn't been referenced, it will be removed from the cache.

Question 16 Easy Mcq

✓ Correct ✗ Incorrect

What is maximum number of hosts allowed on subnet 172.20.64.0/23?

510

512

1024

256

Explanation:

Question 17 Easy Mcq

✓ Correct ✗ Incorrect

In TCP/IP, what is the Windowing mechanism used for?

It performs error checking

It enables the lost segments to be detected and retransmitted

It enables TCP to control the flow of data

It appends a header to the data that is received

Explanation:

Question 18 Easy Mcq

✓ Correct ✗ Incorrect

What is the default time-to-live (TTL) value for an entry in the ARP cache?

30 seconds

60 seconds

2 minutes

Depends on OS

Explanation:

Question 19 Easy Mcq

✓ Correct ✗ Incorrect

What is the binary value of hex 9F?

10011111

10111000

11110001

10001111

Explanation:

Question 20 Easy Mcq

✓ Correct ✗ Incorrect

What is the broadcast address of IP address 172.16.10.0 with a subnet mask of 255.255.252.0?

172.16.10.255

172.16.12.255

172.16.11.255

172.16.15.255

Explanation:

Question 21 Easy Mcq

✓ Correct ✗ Incorrect

What is the default subnet mask for a Class C network?

255.0.0.0

255.255.0.0

255.255.255.0

255.0.0.255

Explanation:

Question 22 Easy Mcq

✓ Correct ✗ Incorrect

What is the binary value of hex BF?

10100000

10111111

11111000

111011

Explanation:

The binary value of hex BF is 10111111. Converting from hexadecimal to binary: B (1011) and F (1111) = 10111111.

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