Practice by Category & Subject

What is recommended for resolving name-to-address mapping in a computer that does not support NetBIOS name registration with windows server 2003 WINS Server?

Dynamic registration

Command-line tools

Static entries

Hosts files

Explanation:

Context manager for exception handling. Example: class ErrorHandler: def __exit__(self, exc_type, exc_val, exc_tb): return True. Returning True suppresses exception. Exception suppression.

Question 2 Easy Mcq

✓ Correct ✗ Incorrect

What is the speed of ISDN PRI service with 30B + 1D channel?

2.048 Mbps

1.544 Mbps

144 Kbps

128 Kbps

Explanation:

Set mutability allows add/remove. Example: s = {1,2}; s.add(3); s.remove(1). Content changes. Element operations allowed. Mutable set.

Question 3 Easy Mcq

✓ Correct ✗ Incorrect

At which layer of the OSI model, does SMTP (Simple Mail Transfer Protocol) operate?

Application

Transport

Session

Presentation

Explanation:

Set isdisjoint() checks no overlap. Example: {1,2}.isdisjoint({3,4}) returns True. No common elements. Efficient check. Disjoint set test.

Question 4 Easy Mcq

✓ Correct ✗ Incorrect

What is the full form of PPPoE?

Point to Point Protocol over Exchange

Point to Point Password over Ethernet

Point to Point Protocol over Ethernet

None of the above

Explanation:

List multiplication with mutable elements. Example: [[0]]*3 creates [[0],[0],[0]] but all reference same list. Modifying one changes all. Use [[0] for _ in range(3)] for independence. Shallow copy issue.

Question 5 Easy Mcq

✓ Correct ✗ Incorrect

What is the recommended number of people should you speak with at one time while networking?

Two people maximum. You don't want to miss anything important either one of them says

Three or more if the people are your age or younger, one or two if they are older than you

It's best to observe and not participate in conversations

Four or more people whenever possible. The more contacts in a shorter time, the better

Explanation:

Set isdisjoint() checks no common elements. Example: {1,2}.isdisjoint({3,4}) returns True. No operator equivalent. Disjoint set testing.

Question 6 Easy Mcq

✓ Correct ✗ Incorrect

What is LinkedIn most commonly used for amongst entry-level employees?

Industry networking

Job search and networking with co-workers

Keeping in touch

None of these

Explanation:

Set difference_update() modifies in-place. Example: s1.difference_update(s2) removes s2's elements from s1. s1 -= s2 equivalent. In-place difference.

Question 7 Easy Mcq

✓ Correct ✗ Incorrect

What is multiplexing?

Allowing multiple senders and receivers to share a single channel

Allowing multiple senders and receivers to share a single media

Allowing bi-directional communication

Explanation:

String encode() and decode() are inverses. Example: 'hello'.encode('utf-8').decode('utf-8') returns 'hello'. String to bytes to string. Encoding roundtrip. Symmetrical operations.

Question 8 Easy Mcq

✓ Correct ✗ Incorrect

The hex BF value in decimal is 191. What is the value of hex BF in binary?

10100000

10111111

11111000

111011

Explanation:

Decorator with arguments needs wrapper. Example: @decorator(arg) requires decorator to return decorator function. Two levels of nesting. Parameterized decorator pattern. Double wrapping.

Question 9 Easy Mcq

✓ Correct ✗ Incorrect

What is LinkedIn most commonly used for amongst Middle Management?

Networking with their friends and family

Keeping in touch and industry networking

None of these

Hiring new employees

Explanation:

List clear() removes all elements. Example: lst.clear() empties list. Modifies in-place. Equivalent to del lst[:]. Complete list clearing.

Question 10 Easy Mcq

✓ Correct ✗ Incorrect

What is ATM (Asynchronous Transfer Mode)?

It is a WAN technology based on frequency division multiplexing that uses fixed size packets known as cells

It is a WAN technology based on time division multiplexing that uses variable size packets

It is a WAN technology based on time division multiplexing that uses fixed size packets known as cells

It is a virtual circuit based WAN technology

Explanation:

Dictionary clear() vs reassignment. clear() keeps same object: all references affected. Example: d2 = d1; d1.clear(); d2 is empty. Reassignment d1 = {} doesn't affect d2. Mutation vs rebinding.

Question 11 Easy Mcq

✓ Correct ✗ Incorrect

What is a checksum?

An error detection technique

A network troubleshooting device

Another name for protocol header

Another name for protocol trailer

Explanation:

Dictionary items() enables parallel iteration. Example: for k, v in d.items(): process(k, v). Unpacks key-value pairs. More Pythonic than for k in d: v = d[k]. Tuple unpacking in loop.

Question 12 Easy Mcq

✓ Correct ✗ Incorrect

What is the IEEE 802.5 standard related to?

Definition of the Logical Link Control (LLC) sublayer

Token Ring

Token Bus

Ethernet

Explanation:

List comprehension with else. Example: [x if x > 0 else 0 for x in nums] replaces negatives with 0. Ternary in expression. Conditional transformation. If-else in comprehension.

Question 13 Easy Mcq

✓ Correct ✗ Incorrect

What is the speed of a E1 line?

128 kbps

144 kbps

2.048 Mbps

1.544 Mbps

Explanation:

Dictionary comprehension with zip. Example: {k: v for k, v in zip(keys, values)} pairs sequences. Combines two iterables into dict. Convenient dict construction. Zipped dict creation.

Question 14 Easy Mcq

✓ Correct ✗ Incorrect

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

65536

65534

256

254

Explanation:

Dictionary setdefault() returns value. Example: val = d.setdefault('key', 0) returns existing or new value. Useful for immediate use. Get-or-set with return. Return value utility.

Question 15 Easy Mcq

✓ Correct ✗ Incorrect

What is the recommended way you should act while at a networking event?

Be serious, and don’t reveal things about your personal life

Change your personality to match the tone of the person with whom you're speaking

Be the fun, life of the party everyone wants to talk to

Be genuine- being yourself is best

Explanation:

String partition() splits into three parts. Example: 'a=b'.partition('=') returns ('a', '=', 'b'). Separator included. rpartition() from right. Three-way split.

Question 16 Easy Mcq

✓ Correct ✗ Incorrect

When inviting someone to connect with you on LinkedIn, what is the appropriate etiquette?

Follow up with a phone call immediately after

Send a personal message reminding them where you met, or saying why you're adding them

Send an invite every few days until they accept

Use the pre-written message

Explanation:

String methods are immutable operations. Example: s = 'hello'; s.upper() returns 'HELLO' but s still 'hello'. Must reassign: s = s.upper(). Immutability convention.

Question 17 Easy Mcq

✓ Correct ✗ Incorrect

What is attenuation?

Distortion of the signal due to noise

Distortion of the signal due to Electro Magnetic Interference

Weakening of the signal in a cable over a distance

Cross Talk

Explanation:

Dictionary keys() supports set operations. Example: d1.keys() & d2.keys() finds common keys. View acts like set. Efficient key comparisons. Set-like view operations.

Question 18 Easy Mcq

✓ Correct ✗ Incorrect

What is the purpose of the shielding in a Shielded Twisted Pair (STP) cable?

To reduce attenuation

To reduce cross talk

To reduce Electro-Magnetic Interference

Explanation:

Dictionary comprehension can swap keys and values. Example: {v: k for k, v in d.items()} inverts dict. Values must be hashable for keys. Assumes unique values. Dict inversion.

Question 19 Easy Mcq

✓ Correct ✗ Incorrect

What is the binary equivalent of the decimal number 157?

11000111

10111001

11100011

10011101

Explanation:

Zero numeric values are falsy. Example: bool(0) and bool(0.0) and bool(0j) all False. Any zero is False. Non-zero is True. Numeric falsiness.

Question 20 Easy Mcq

✓ Correct ✗ Incorrect

What is the maximum transmission speed of CAT 5 cable?

10 Mbps

16 Mbps

100 Mbps

1000 Mbps

Explanation:

String replace() returns new string. Example: s = 'hello'; s.replace('l', 'L'); print(s) prints 'hello'. Must reassign: s = s.replace('l', 'L'). Strings immutable. Result must be captured.

Question 21 Easy Mcq

✓ Correct ✗ Incorrect

When the administrator tries to convert basic disk to dynamic disk from computer management, he finds no options for conversion. Identify the reason.

There is no unformatted free space available

No NTFS partition exists on Basic Disk

The disk is in a portable computer

The disk is a removable disk

Explanation:

Truediv for / operator. Example: def __truediv__(self, other): return self.value / other.value. True division. Always returns float in Python 3. Division operation.

Question 22 Easy Mcq

✓ Correct ✗ Incorrect

What is V.42, V.22, V.42bis?

IEEE standards

Modem standards

CCITT standards

MAC addressing formats

Explanation:

List repetition creates shallow copies. Example: matrix = [[0] * 3] * 3 creates shared rows. Modifying one row affects all. Use [[0] * 3 for _ in range(3)] for independence. Shallow repetition issue.

Question 23 Easy Mcq

✓ Correct ✗ Incorrect

What is a good question to ask someone you're networking with?

What advice would you give someone looking to start out in the business?

How did you get involved in the _________ industry?

All of these

What types of projects are you working on?

Explanation:

String istitle() checks title case. Example: 'Hello World'.istitle() returns True. Each word starts with uppercase. Title case verification.

Question 24 Easy Mcq

✓ Correct ✗ Incorrect

What is a referral group?

A group of people you have referred to another member of your network

A meeting group where participants from non-competing companies exchange leads and referrals

None of these

A group of clients referred to you by one individual in your network

Explanation:

String format with positional and named. Example: '{0} {name} {0}'.format('x', name='y') returns 'x y x'. Mix both styles. Positional by number, named by name. Flexible formatting.

Question 25 Easy Mcq

✓ Correct ✗ Incorrect

In a TCP/IP network, which layers are basically absent?

Session, Presentation

Transport, Session

Session, Application

Presentation, Application

Explanation:

String translate() efficient for character substitution. Example: table = str.maketrans('aeiou', '12345'); 'hello'.translate(table) returns 'h2ll4'. Single pass. Better than multiple replace(). Character mapping performance.

Question 26 Easy Mcq

✓ Correct ✗ Incorrect

What is the recommended number of times you should share and comment on a LinkedIn connections' posts?

None of these

As many times as you want, the more the better

Three to four comments per post, one share per day

Once a day maximum

Explanation:

Set operations have operator equivalents. union: |, intersection: &, difference: -, symmetric_difference: ^. Example: {1,2} | {2,3} returns {1,2,3}. Operators more concise. Mathematical notation. Set algebra operators.

Question 27 Easy Mcq

✓ Correct ✗ Incorrect

What is the IEEE 802.2 standard related to?

Definition of the Logical Link Control (LLC) sublayer

Token Ring

Token Bus

Ethernet

Explanation:

For-else clause executes if no break. Example: for x in items: if x == target: break else: print('not found'). else runs when loop completes normally. Not after break. Search pattern utility.

Question 28 Easy Mcq

✓ Correct ✗ Incorrect

What is the suggested waiting period between meeting a new professional connection and contacting them?

2 days

1 day

5 days

1 week

Explanation:

Dictionary comprehension with conditional. Example: {k: v for k, v in d.items() if v > 0} filters during creation. More efficient than creating then filtering. Single pass construction. Conditional dict building.

Question 29 Easy Mcq

✓ Correct ✗ Incorrect

What is the golden rule of networking?

Talk for 15 minutes and exit conversation

Let them ask all the questions

Ask how you can help your contact

Ask how your contact can help you

Explanation:

Dictionary clear() removes all items. Example: d.clear() empties dict. In-place operation. Equivalent to d = {} for local variable. Complete clearing.

Question 30 Easy Mcq

✓ Correct ✗ Incorrect

What is the recommended number of times you should update your status on LinkedIn so you remain active and are visible to connections?

Once per week

3 times a week

Once per day

3 times a day

Explanation:

Dictionary popitem() removes in LIFO order (Python 3.7+). Last inserted removed first. Example: d['a'] = 1; d['b'] = 2; d.popitem() removes 'b'. OrderedDict behavior now default. Last-in-first-out removal.

Question 31 Easy Mcq

✓ Correct ✗ Incorrect

Why does the administrator fail to rename the drive letter of the system partition in Basic Disk?

Drive letters once formatted can never be renamed

Drive letters can only be modified in dynamic disks

System/boot partition drive letters cannot be modified

Drive letters need to be formatted in NTFS

Explanation:

Ge method for >= operator. Example: def __ge__(self, other): return self.value >= other.value. Enables obj1 >= obj2. Greater-equal comparison.

Question 32 Easy Mcq

✓ Correct ✗ Incorrect

What is LinkedIn most commonly used for?

Testing a job candidate's computer literacy

Chatting with co-workers

Industry networking

Promoting businesses

Explanation:

Bytes decode() converts to string. Example: b'hello'.decode('utf-8') returns 'hello'. Encoding parameter default 'utf-8'. Inverse: encode(). Bytes to string.

Question 33 Easy Mcq

✓ Correct ✗ Incorrect

What is true regarding the character underscore( _ ) in DNS zone naming convention?

Domain name can contain an underscore

It is the reserved character for active directory

Special approval is needed for using underscore

Underscore can never be used anywhere

Explanation:

Stem for filename without extension. Example: Path('file.txt').stem returns 'file'. Excludes extension. Name without suffix. Filename extraction.

Question 34 Easy Mcq

✓ Correct ✗ Incorrect

If you want to maintain a professional connection with your old supervisor, what is the recommended frequency in which you should you touch base?

Once a year

Every 3-4 months

Several times a month

Every week

Explanation:

String lower() and upper() for case conversion. Example: 'Hello'.lower() returns 'hello'. casefold() more aggressive (language-specific). Case transformation.

Question 35 Easy Mcq

✓ Correct ✗ Incorrect

What is the recommended maximum length per TIA/EIA 568-5-A for a segment of category 5 cable?

500m

1km

100m

180m

Explanation:

Negative step reverses sequence. Example: range(10, 0, -1) counts down 10 to 1. lst[::-1] reverses list. Negative step direction. Reverse iteration pattern.

Question 36 Easy Mcq

✓ Correct ✗ Incorrect

What is the IEEE 802.3 standard related to?

Definition of the Logical Link Control (LLC) sublayer

Token Ring

Token Bus

Ethernet

Explanation:

Dictionary setdefault() useful for grouping. Example: groups.setdefault(key, []).append(value) creates list if needed. Atomic operation. Common pattern for categorization. Get-or-initialize pattern.

Question 37 Easy Mcq

✓ Correct ✗ Incorrect

Which of the following is the best definition of professional networking?

Sending memos to your boss to keep him informed

Relationship-building that exposes you to to a new interest

A team-building practice inside your company

Explanation:

String title() capitalizes each word. Example: 'hello world'.title() returns 'Hello World'. First letter of each word capitalized. Title case conversion.

Question 38 Easy Mcq

✓ Correct ✗ Incorrect

What is the binary form of 150.210.99.5?

11001011.00111011.11110000.10101010

10010110.11010010.01100011.00000101

10010111.11010011.01101111.11111000

10001111.01111100.01110100.11100011

Explanation:

Iterator protocol requires __iter__ and __next__. Example: class Counter: def __iter__(self): return self; def __next__(self): return next_value or raise StopIteration. Enables for loops. Manual iteration control.

Question 39 Easy Mcq

✓ Correct ✗ Incorrect

What is the recommended way to tag-team a networking event with a co-worker or friend?

Split up as soon as you arrive, but have a game plan to help each other when needed

Stick together so you look more approachable

Stick together so you can show how well you work with others

Do a lap around the room together, and then go talk to the same person at the same time

Explanation:

String zfill() pads with zeros. Example: '42'.zfill(5) returns '00042'. For numbers. Handles signs: '-42'.zfill(5) returns '-0042'. Zero padding.

Question 40 Easy Mcq

✓ Correct ✗ Incorrect

What is the recommended maximum length(approx) for a segment of UTP cable?

500m

1km

100m

180m

Explanation:

Dictionary del removes key. Example: del d['key'] removes entry. Raises KeyError if missing. Use pop() for safe removal. Key deletion.

Question 41 Easy Mcq

✓ Correct ✗ Incorrect

What is the X.25 protocol?

It is a packet switching WAN protocol based on public data networks

It is a packet switching WAN protocol based on public telephone networks

It is a packet switching wireless LAN protocol

It is a packet switching wireless WAN protocol

Explanation:

Set symmetric_difference_update() in-place XOR. Example: s1 ^= s2 keeps elements in either but not both. Modifies s1. Exclusive or in-place. Symmetric difference mutation.

Question 42 Easy Mcq

✓ Correct ✗ Incorrect

What is the private IP range of Class-B?

10.0.0.0 - 10.255.255.255

172.0.0.0 - 172.255.255.255

172.16.0.0 - 172.31.255.255

Explanation:

Format method for custom formatting. Example: def __format__(self, spec): return format(self.value, spec). Supports f-strings and format(). Format specification protocol.

Question 43 Easy Mcq

✓ Correct ✗ Incorrect

A basic disk has Windows 2000 professional installed on NTFS. When administrator converts it to dynamic disk and tries to install windows XP professional, installation fails. Identify the cause.

XP can't be installed on dynamic disk

Both operating systems can't be installed on the same drive

There can be only one NTFS partition in disk

Fresh installation is not possible in dynamic disk

Explanation:

Mod method for % operator. Example: def __mod__(self, other): return self.value % other.value. Enables obj1 % obj2. Modulo operation.

Question 44 Easy Mcq

✓ Correct ✗ Incorrect

What is the purpose of the MAC sublayer?

Sending acknowledgements whenever packets are received

Performing data compression

Performing encryption and decryption

Controlliing the way multiple devices share the same media

Explanation:

Set update() accepts multiple iterables. Example: s.update([1,2], [3,4], [5,6]) adds all. Multiple argument support. Bulk addition from multiple sources. Multi-source update.

Question 45 Easy Mcq

✓ Correct ✗ Incorrect

What is the maximum transmission speed supported by a standard ISDN BRI?

64 kbps

128 kbps

256 kbps

1.544 mbps

Explanation:

Set del not supported. Example: del s[item] invalid. Use remove() or discard(). No indexing on sets. Removal via methods.

Question 46 Easy Mcq

✓ Correct ✗ Incorrect

What is a token?

A part of the packet trailer in a token ring network

A part of the packet header in a token ring network

A special packet which travels from computer to computer in a token ring network

Explanation:

Integer caching for small numbers. Example: a = 5; b = 5; a is b is True. Python caches -5 to 256. Optimization detail. Not guaranteed across implementations. Small integer interning.

Question 47 Easy Mcq

✓ Correct ✗ Incorrect

What is the purpose of twisting the pairs of cables together in an UTP (unshielded twisted pair) cable?

To reduce attenuation

To reduce cross talk

To reduce Electromagnetic Interference

To reduce noise

Explanation:

Enumerate with start parameter. Example: enumerate(['a','b','c'], start=1) yields (1,'a'), (2,'b'), (3,'c'). Custom starting index. Useful for 1-based indexing. Flexible enumeration.

Question 48 Easy Mcq

✓ Correct ✗ Incorrect

If a user gets "Destination Host Unreachable" error, what is the root cause of message?

DNS

WINS

Default Gateway

Hop Count

Explanation:

Abstract base classes enforce interface. Example: from abc import ABC, abstractmethod; class Base(ABC): @abstractmethod def method(self): pass. Subclasses must implement. Cannot instantiate abstract class. Interface contract.

Question 49 Easy Mcq

✓ Correct ✗ Incorrect

What is the speed of a T1 line?

128 kbps

144 kbps

2.048 Mbps

1.544 Mbps

Explanation:

List extend() modifies in-place efficiently. Example: lst.extend(other) adds elements without creating intermediate list. More efficient than lst = lst + other. In-place bulk addition. Efficient extension.

Question 50 Easy Mcq

✓ Correct ✗ Incorrect

What is the full form of DSL?

Digital Subscription Line

Digital Super Link

Digital Speed Line

Digital Subscriber Line

Explanation:

String maketrans() creates translation table. Example: table = str.maketrans('abc', '123'); 'abc'.translate(table) returns '123'. Character mapping. Used with translate(). Translation table creation.

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