计算机网络 - 总结
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 |