计算机网络 - 总结

HopeMaker3年前 (2021-12-17)计算机网络1147

到这儿基本郑老师课上的内容就都结束了,后面一些网络安全技术的延申个人觉得对计算机网络而言不甚重要,所以没有学习笔记,另外第八版中有关MPLS、wireless网络的一些内容,比如VPN、CSMA/CA等技术和协议,虽然对本科生不作要求,但是研究生是需要学习的,但像CSMA/CA协议,郑老师在前面的内容中已经讲过,还有数据中心、QoS等等,都在之前的课程中有所涉及,可见郑老师课堂内容之丰富,所以虽然第八版单独成章,所以没有专门写笔记,时间确实来不太及,这第六章的内容,还是考完试回来补的XD。

这学期的计网考试,从客观的角度上来说确实不是很难,没有考察超过PPT和平时讲座的任何内容,基本每一题都有些印象,但是做选择题还是有一些题目不太确定,想要去翻找相关的知识点,却又难以精准定位,浪费了很多时间(我还把老师总计超过一千张的PPT浓缩到了300+,都来不及找,浓缩的过程中甚至浓缩掉了一个考点,数公里到数十公里覆盖范围的网络,应该是MAN,我有印象但是在记不清楚,选的WAN,WAN的范围是几百到几千公里,悲)。

翻资料耗时太多,导致最后有一道简答题写得很简答,题目要求总结一下RDT并讲一下用途,我只来得及简单地说了一下RDT期望保障可靠性,发端请求和收端返回ACK的过程,画了张C/S的草图想节省时间,也只来得及标注了收端返回n+1作期望代替NCK的做法,用途只来得及写了两种pipeline的形式,GBN和SR,没足够时间做出补充,看上去实在太过简略。就作答情况而言,老师如果高抬贵手,应该是可以过的,能过就好了,复习、课设还有实验室忙得头掉,只能说我也是尽力而为best-effort了。

整理了缩写和全称的表格,其中有一条复制的PPT上的,没细看,PPT上是错的,复制了也是错的,考的时候有所怀疑,但是依然坚定了整理的知识点,结果发现当时的自己是对的,是整理的知识点错了,悲^2。错的是CDN,应该是Content Delivery Network,当时资料上是Content Provider Network,就离谱。

刚考完计网又要复习算法了,但是就这一门了吧,还有算法的课设,前一届集体摆烂大家都没做,最后不了了之,今年有几个人带头一卷,大家一块儿难受,害。

缩写-全称表格如下,为考场快速查找,按A-Z的顺序排序,现在应该没什么错的了,属实难顶。

AF - assured   forwarding 
AIMD - Additive Increase Multiplicative   Decrease
AON - Active Optical Network
AP - access point
API - Application Programming Interface
ARIS - Aggregate Route-Based IP   Switching 
ARP - Address Resolution Protocol
ARPANET - Advanced Research Projects   Agency Network
ARQ - Automatic Repeat-reQuest
AS - Autonomous System 
ASN -   Autonomous System Number 
ATM - Asynchronous Transfer Mode异步传输模式
AToM - Any Transport over MPLS
BDR - Backup Designated Router
BE - best-effort 
BER - bit error rates
BF - Bellman-Ford equation 
BGP - Border Gateway Protocol
BSS - Basic Service Set 
C - Customer devices 
CA - Control Agency 
CC - Coaxial cable
CDMA - Code Division Multiple   Access 
CDN - Content Delivery Network 
CE - Customer Edge devices
CI - congestion indication
CIDR - Classless InterDomain   Routing 
CLI - Command Line Interface
CLNP - ConnectionLess Network Protocol
CoS - Class of Service 
CRC - Cyclic redundancy checks  
CR-LDP - Constraint-based Routing LDP
CSMA - carrier sense multiple access
CSMA/CA - Carrier Sense Multiple Access   with Collision Avoid
CSMA/CD - CSMA with collision detection
CSR - Cell Switching Router 
CTS - Clear To Send
DASH - Dynamic, Adaptive Streaming over   HTTP
DBD - Database Description 
DCQCN - Congestion Point Notification   Point Reaction Point
DCTCP - Data Center TCP
DHCP - Dynamic Host Configuration   Protocol
DNM - Domain Name Management
DNS - Domain Name Server
DoS - Denial of service
DR - Default Routes
DR - Designated Router
DSCP - Differentiated Service Code   Point 
DSL - digital subscriber line 
DSLAM - DSL Access Multiplexer
DSP - Digital Signal Processing
DV - Distance vector algorithm 
eBGP - external BGP
ECN - Electronic Communication Network
ECN - Explicit Congestion Notification
EDC - Error Detection And   Correction 
EF - expedited forwarding 
EGP - exterior gateway protocol
EIGRP - Enhanced Interior Gateway   Routing Protocol
FCFS - FIRST COME FIRST SERVICE
FDM - Frequency Division   Multiplexing 
FEC - Forward Equivalence Class 
FIFO - first in first out
FIN - FINAL
FLSM - Fixed length subnet mask   subnetting 
FOC - Fiber optic cable
FSM - finite state machines 
FTP - File Transfer Protocol
FTTH - Fiber To The Home
GBN - Go-Back-N
GPRS - General packet radio service
GRE - Generic Routing Encapsulation 
GTP - GPRS Tunneling Protocol 
HFC - hybrid fiber coax
HOL - Head-of-the-Line
HQoS - Hierarchical Quality of Service
HTML - HyperText Markup Language
HTTP - Hyper Text Transfer Protocol
H-VPLS - Hierarchical VPLS 
IAB - Internet Architecture Board 
IAM - Internet Architectural Management
IANA - The Internet Assigned Numbers   Authority 
iBGP - internal BGP
ICANN - The Internet Corporation for   Assigned Names and Numbers 
ICMP - Internet Control Message Protocol
ID - Internet Draft 
IDC -   Information Distribution Company
IDP - Internet Datagram Protocol
IESG - Internet Engineering Steering   Group 
IETF - Internet Engineering Task Force
IGD - Internet Gateway Device
IGMP - Internet Group Management   Protocol
IGP - interior gateway protocol
IMSI - International Mobile Subscriber   Identity 
IP - Internet Protocol
Ipsec - IP security
IRSG - Internet Research Steering   Group 
IRTF - Internet Research Task Force 
ISP - Internet Service Provider
IXP - Internet Exchange Point
L2F - The Layer Two Forwarding   (Protocol)
L2TPv3 - Layer Two Tunneling Protocol   version 3 
LAN - local area network
LDP - Label Distribution Protocol 
LER - Label Edge Router 
LS - link state algorithm 
LSA - Link State Advertisements
LSAck - Link Status Acknowledgement 
LSP - Label Switched path 
LSR - Label Switch Router 
LSR - Link Status Request 
LSU - Link Status Update 
LTE - Long-Term Evolution 
MAC - Media Access Control
MIB - Management Information Base
MISO - Multiple-input and   single-output 
MPLS - Multiprotocol label   switching 
MSS - Maximum Segment Size
MSTP - Multi- Service Transport Platform
MTU - Maximum Transmission Unit
NAS - Network Access Servers 
NAT - Network Address Translation
NCP - Network Control Protocol
NFV - network functions   virtualization 
NHLFE - Next Hop Label Forwarding Entry
NHLFT - Next Hop Label Forwarding Table
NI - no increase in rate
NIC - Network Interface Card 
NSAP - network service access point
ODL - OpenDaylight
OFDMA - Orthogonal Frequency Division   Multiple Access
OLT - Optical Line Terminator 
ONT - Optical Network Terminator 
OSPF - Open Shortest Path First  
OTT - over the top
P - Service Provider devices
PDCP - Packet Data Convergence Protocol
PE - Service Provider Edge devices 
PE-r - Provider Edge routers 
PE-rs - Provider Edge devices that are   capable of both routing and switching 
PE-s - Provider Edge switches 
PHB - Per-Hop Behavior (PHB) 
PON - Passive Optical network 
PoP - Points of Presence
ppm - pkts per min 
PPP - Point to Point Protocol
PPTP - The Point-to-Point Tunneling   Protocol 
Q-in-Q - IEEE 802.1Q tunneling 
QoS - Quality of Service 
QUIC - Quick UDP Internet Connection
RARP - Reverse Address Resolution   Protocol
RDMA - remote Division Multiple   Access 
RDT - Reliable data transfer   protocol 
RED - Random Early Detection 
RFC - Request for Comments
RIP - routing information protocol
RLC - Radio Link Control 
ROM - Read-Only Memory
RPC - Remote Procedure Call 
RR - Round Robin 
RST - RESET
RSVP - Resource Reservation Protocol
RSVP-TE - Resource ReSerVation   Protocol-Traffic Engineering
RTP - Real-time Transport Protocol
RTS - Request To Send
RTS - revised technical specification
RTT - Round-Trip Time
SDH - Synchronous Digital Hierarchy
SDN - software-defined networking 
SGMP - Simple Gateway Monitoring   Protocol
SIM - Subscriber Identity Module
SIMO - Single-input and   multiple-output 
SLA - Service Level Agreement
SLAs - Service Level Agreements 
SMI - Structure ofManagement Information
SMTP - Simple Mail Transfer Protocol
SNMP - Simple Network Management   Protocol
SNR - signal-to-noise ratio
SONET - Synchronous Optical Network
SPF - Shortest Path First 
SPOF - single point of failure 
SR - Selective repeat 
SSL - Secure Sockets Layer 
SYN - Synchronize Sequence Numbers
TCAMs - ternary content addressable   memories 
TCP - Transmission Control Protocol
TDM - Time Division Multiplexing 
TOR - Top of Rack 
ToS - Terms of Service
TOS - Type of Service 
TP - Twisted pair 
TTL - Time To Live
UDP - User Datagram Protocol
UPnP - Universal Plug and Play
VLAN - Virtual Local Area Network 
VLSM -   Variable Length Subnet Mask 
VoIP - Voice over Internet Protocol
VPLS - Virtual Private LAN Service 
VPN - Virtual Private Networks 
WAN - Wide Area Network
WDM - Wave Division Multiplexing 
WFQ - weight fair queuing 
WLAN - Wireless local area network
WRED - Weighted Random Early   Detection 


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