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仆街UA執左了 咁d 公司dmz server 怎樣處理？
There is no difference in practice
This is the same here at old version?
a living example of contradiction
因為2016 ccna 六百幾頁佢宜家呢個版本搞到成800 頁咁滯 我真係唔知道邊忽加料邊忽唔加料
Google 的 application 加埋入嚟囉
….你張cert is cisco 唔係vendor natural
嗰個導師話會考埋呢呀點樣用layer 同注解 夢咗喺度
有無人寫過brainfuck呢隻program language?
Brainfuck is an esoteric programming language created in 1993 by Urban Müller. Notable for its extreme minimalism, the language consists of only eight simple commands and an instruction pointer. While it is fully Turing complete, it is not intended for practical use, but to challenge and amuse programmers.
以下內容 阿蛇上身
咁如果HTTP 同HTTPS 分別係咩呢 以的士台app做例子 你用app form 輸入了個人資料 如果沒有HTTPS情況下有三個地方俾人看到啊
矛喎，我n年前reg 左個online course web,今個月free cissp
首先你用4G 上去 機站人員會看到你d 末加密data 其次switching core 數據中心都會看到d packet 接着就是hkis point to point router 連接地方看到你的data
首先在你switch 夾左你d packet 之後再用MITM 技術打包
jm9，係 mobile network 的話，foreign agent都已經 intercept 到
我已經看到拗頭2021年Cisco 會考 變化好大WoW
有 common sense 都。。。（咦好似我 assume 左大家都有
CCNA個syllabus更新左幾代
彼得精通其變化，但冇考過
分分鐘連 Cisco Academy account 都無俾人 enroll 過
人地全部 stright through... X)
同埋你要pass佢個mock先有半價guaruntee
坦白講，CCNA 堆 course 上網都有得 self learn...
其實Systematic 同甲子園都係HH010 dump
need scaling: iaas
predictable: on perm
Sorry, 應該係Software Engineer
話說呢度有無人知道香港地點樣買 SIP Trunk
PCCW 講明唔做 SIP Trunk，HKBN 好貴，WTT 好似 discontinue 左
two way fully programmable
如果 wholesale 的話，某 *o*y 公司有做
所以話,你如果係買cert嘅,咪課金hh010 vip down brain dump la
@licson Twilio got Singapore edge, but no HK
每日返工返到眼訓，望一望 peter 即刻笑到醒神返
fuck SIP, we going P2P voice chat
可能
@licson 自己 implement SS7 firewall 呢～
uptime is 1 year, 19 weeks, 5 days, 3 hours, 5 minutes
Uptime for this control processor is 1 year, 19 weeks, 5 days, 2 hours, 54 minutes
Question: Please form a link between R1 and R2 in RIP protocol
»Please form a link (use command)
How many IP address in a Class C range ?
R1
Conf t
Hostname r1
Username r2 pass Cisco
Int s0/0/0
Encap ppp
Ppp auth chap
Exit
R2
Conf t
Hostname R2
Username r2 pass Cisco
Int s0/0/0
Encap ppp
Ppp auth chap
Exit
係由192.0.0.1到223.255.255.254
Q: How many IP address per Class C ?
Q2: How many subnets can be allocated in a Class C network?
What is the minimum usable IP address per subnet ?
做左d最basic既tutorial已經5粒星....
如果想講大話，建議你講：呢個月做咗20題，明咗dfs, bfs
又例如話：原來rotten orange 嗰題要用bfs, 學到嘢了
因為
1. 有人問你會有記錄，你唔show 圖=假
2. 你C++ basics 都未穩
3. 冇人會留意你，除非你成日post solution
幾多個IP嚮class c都答錯, 仲咁多嘢講其實我要退group
認真做嘅話，做完200題都可以solve 大部分coding problem...
點樣為之認真做？
一個好例子係longest increasing subsequence
1.先睇吓裏面嘅內容先囉 example係點樣
2. 跟住喺紙上畫來畫去 整一個mind map出嚟囉 畫完整個flow chart
3. 之後就直接test code 囉
大佬你讀Mahil 即係等於林作打培生 都要練下拳先啱
我仲未練到咁高 如果練到咁高嘅話 hackerrank advanced 只係得4%合格率嘅題目我就一早答到啦
我啲天生腦比較笨拙慢慢睇㗎 要多啲test多啲睇多啲讀先做到囉
鬼有 我呢啲比較思考上比較慢 要慢慢睇完題目跟住睇吓嗰個詞語嘅解釋先慢慢諗到點做㗎
咩叫有時間做啦 你哋再打機啦食飯啦唱歌啦做任何嘅娛樂節目啦time 呢就等於我攞嚟解code 嘅時間
又搞到我只可以去其他網站搵吓邊度有比較有公信力嘅解釋網站
peter依家識唔識分array同linked list
咁你唔好google, 答下有咩分別, 咩情況用array, 咩情況用linked list
做Leetcode同array 做hackerrank用lniked list
Array 係random access
但linkedlist 係比較有次序有規律咁樣去管理佢裏面啲column
easy + medium, me shit...
嗰啲唔算啦但係講到啱啱頭先嗰個HR 咁樣 非常火大
case 1: all characters are unique
given strings X and Y with Y longer than X, check if X is a subsequence of Y.
開個2d array/hashmap去cache，完
e.g.
小明係第20級樓梯仆落黎，佢一次過可以仆1-4級樓梯，請問佢有要仆落黎有幾多種仆法
oh, is it the length LCS of s and reverse_s?
this doesn't make sense because the question is asking for subSTRINGs
先唔好理dp, recursive行先再optimize
yeah, people nowadays are wasting food such as sausage pizza, they just threw it away to the ground
results = []
for [l, r] in (all combinations of l, r where l >= 0, r < TLen, l <= r):
cnt = 0
while T[l] == T[r]:
cnt += 1
l -= 1
r += 1
if l < 0 or r >= TLen:
break
然後將佢變Recursion形式，將入面statement變function param
i = len(s)
j = len(reverse_s)
solve(s, reverse_s, i, j):
if(i == 0 || j == 0) return 0
if(s[i] == reverse_s[j]) return solve(x, y, i - 1, j - 1) + 1
else return max(solve(x, y, i - 1), solve(x, y, i , j - 1))
overlapping subproblem
optimal substructure
both are so hard to prove...
smells like it can be converted to some palindromic problem
我記得mid term 有題：design a data structure that can peek min and max element in O(1) time, insert and pop min or max element in O(log n) time
for every insertion, call個heapify()
即係咁你應該要攞啲網上嘅題目出嚟俾人挑戰挑戰一下 呢啲出嚟呢好難捉摸㗎
maintain the invariant property of heap
same reason the senpai in CE days hated recursion
you need to support both pop_min() and pop_max()
prove time complexity, prove correctness
都好過比個10位既prime叫你即場factor...
個idea 係odd level min, even level max
oh, because at most 2 level?
this question = what it takes to be a grnius
taught by your supervisor?
algorithmic design and analysis
apply pruning and quantization to the model and deploy to hardware for inference
Can you give some real example
A vEB tree also supports the operations Minimum and Maximum, which return the minimum and maximum element stored in the tree respectively.[3] These both run in O(1) time, since the minimum and maximum element are stored as attributes in each tree.
🤔
用fpga speedup computation
聽起上嚟又幾好喎 but do you find the paper to prove it you can finish the product
u question shows your are layman
u need more 100yrs in order to be my supervisor
問得好邊個鬧我咁d 咪科大
輕can啲嗰個咪就係 city
唔係poly垃圾 係我呢啲垃圾去咗poly物以類聚先垃圾😔
但係上次你有機會去真光定MCS做student intern，你唔去
yeah...you pay enough and your outlook is gonna be fancy
連科Web application design midterm 49/50都冇a
HR 好似話如果係地區頭10會收到嗰間公司出嘅衣服添
我覺得係我成日唔記得做 assignment 嘅問題 🙊
跟住可以挑戰你了 全港top 10 的programmer Challenge
之前試過一次deadline過左幾日先知
而家有咩交都記低先
尤其是依家好多堂都 online 連 midterm 都差的唔記得 🌚
10年前同十年後嘅科學園都冇乜分別，只係多咗新一期
之前最平20幾蚊有個包有埋野飲
而家加到30幾其實都已經唔平
咩無人知乜嘢係 Standalone 5G 咩...
依家 5G 得個快字 delay 同 4G 差唔多
講笑咋而家都好快喎 而且唔係華為領先緊嘅咩 Ericsson 只係追緊咋嘛
仲有 依家 5G 打電話要 fallback 落 4G
5G target maximum speed 20Gbps, latency 1ms
NSA 搵隻大牛龜做 test 都係得 10Gbps
如果大陸同你講我哋已經成功出到6G 你係咪會嚇親㗎
等佢話畀你聽轉 5G 要換 sim 卡果陣就應該已經換咗 5G SA
除咗 5G SA 仲要等 mmWave deploymemt
Apple iPhone 用咩chips 做5G ?
但係中國咁鍾意科技競賽 佢唔會出左一兩年過得慢得滯直接扔6G出嚟咩
依家弊公司矛聊到砌5G iot smarthome
我淨係知道得芬蘭 Elisa 係用 Nokia 嘅 5G Core
中國6G 會喺2029 年引入
而且6G嘅速度根據悉尼嘅一份科學報告話齋會達到五G嘅一百倍, 如果推算嘅話6G大約可以去到1TB速度 而且ITU 喺2019年出咗一份6G白皮書 2022 先有一個正式嘅標準
最近先有新 design 可以做到 300GHz RF
應該係計劃圖掛 希望好似project咁樣預期達成目標
5g已經就嚟shannon limit...你想點超越
由支天線應該乜嘢形狀，點樣 drive RF 到晶片同演算法都要新野……
well for most ppl including ne too, cause informatics in networking = nightmare
所有通信方式係可以容許接受嘅失真率底下都有一個速度上限
sure, bur not fucking backward deduction
channel 越嚟越窄 可以容許嘅 bit error 空間會越嚟越少
即係啲光纖要用靚啲 啲 system 都要儘量減低 error rate
而家 400G / channel 好似已經好埋條先
至於 Nokia 嗰個 1Tbps clear channel 唔知到 bandwidth 開幾大
唔好咁嘅話綠枝會唔會好似變咗由Elon mask 咁樣提倡star link 計劃去比人類網上服務呢 因為呢個方法係比較容易令到人有6G上網
譬如turbo code係二十幾年前嘅野 今日5G先用到佢
satellite internet永遠唔會興得起
個propagation delay對time sensitive task係死罪
唔好諗住可以靠衛星打機睇livestream 會疾死你