Networking MCQ Questions

A client that cannot register itself with WINS needs a static entry added on the WINS server so other computers can resolve its name.

An E1 PRI has 30 B channels plus 1 D channel and two framing slots: 32 x 64 kbps = 2.048 Mbps. A T1 PRI (23B+1D) is 1.544 Mbps.

SMTP is an application-layer protocol used to send email between mail servers.

PPPoE stands for Point-to-Point Protocol over Ethernet; DSL providers often use it to authenticate customers.

Talking with one or two people at a time lets you listen properly and remember details; in larger groups real conversation is harder.

Entry-level employees mostly use LinkedIn to look for jobs and connect with co-workers.

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.

Hex B is 1011 and F is 1111, so BF is 10111111 in binary (191 in decimal).

Middle managers mostly use LinkedIn to keep in touch with contacts and network within their industry.

ATM is a WAN technology that uses time division multiplexing and fixed-size 53-byte cells.

A checksum is a value calculated from the data and sent with it; the receiver recalculates it to detect errors.

IEEE 802.5 is the Token Ring standard.

An E1 line runs at 2.048 Mbps (32 channels of 64 kbps); a T1 runs at 1.544 Mbps.

A Class B network has 16 host bits: 2^16 - 2 = 65,534 usable host addresses.

Being genuine works best at networking events; people trust and remember someone who is themselves.

When you send a LinkedIn invitation, add a personal note reminding them where you met or why you want to connect.

Attenuation is the loss of signal strength as it travels along a cable over distance.

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.

157 = 128 + 16 + 8 + 4 + 1, so in binary it is 10011101.

Cat 5 cable is rated for 100 Mbps (Fast Ethernet). Gigabit (1000 Mbps) needs Cat 5e or better.

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

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.

Asking for advice, how they got into the industry and what they are working on are all good open questions.

A referral group is a regular meeting of people from non-competing businesses who pass business leads to each other.

The TCP/IP model has no separate Session or Presentation layers; their work is part of the Application layer.

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.

IEEE 802.2 defines the Logical Link Control (LLC) sublayer of the Data Link layer.

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.

The golden rule of networking is to give first: ask how you can help your contact.

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.

Windows does not let you change the drive letter of the system or boot partition.

LinkedIn is mostly used for professional, industry networking.

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

Checking in with a former supervisor every three or four months keeps the connection warm without being too frequent.

TIA/EIA-568 limits a Category 5 horizontal cable segment to 100 metres.

IEEE 802.3 is the Ethernet standard.

Professional networking is building relationships that open new opportunities and interests.

150 = 10010110, 210 = 11010010, 99 = 01100011 and 5 = 00000101, which is option b.

With a co-worker, split up when you arrive but agree on a plan to introduce each other to useful people.

A UTP segment can be up to about 100 metres long.

X.25 is an early packet-switching WAN protocol used over public data networks.

The Class B private range is 172.16.0.0 to 172.31.255.255.

A fresh install of Windows XP cannot go onto a dynamic volume that was not originally created as a basic partition.

The MAC sublayer controls how devices share the medium and adds hardware addresses.

An ISDN BRI's two B channels give 2 x 64 = 128 kbps for data.

A token is a special frame that circulates around a Token Ring network; only the holder may send.

Twisting the wire pairs cancels interference between pairs, which reduces crosstalk.

Destination Host Unreachable usually means there is no route, often because the default gateway is missing or wrong.

A T1 line runs at 1.544 Mbps (24 channels of 64 kbps).

DSL stands for Digital Subscriber Line.