This website is develop for a student to help and guide.Here you can find out the notes of a particular subject
This website is develop for a student to help and guide.Here you can find out the notes of a particular subject
This website is develop for a student to help and guide.Here you can find out the notes of a particular subject
Infosys Hiring for System Engineer Role | Infosys off campus Hiring | BE/B.Tech/ME/M.Tech/MCA/MSC
Freshers from B.E./B.Tech/M.E./M.Tech/MCA/M.
Infosys Application Form Link::
https://surveys.infosysapps.com/r/a/x...
The eligibility criteria to apply for this program have been shared below.
1. B.E./B.Tech/M.E./M.Tech graduates from all branches are eligible to apply.
2. MCA/M.Sc. graduates from the following branches only are eligible to apply:
• Computer Science
• Electronics
• Mathematics
• Statistics.
3. Academic criteria – shared in the attached document
4. All percentages/CGPA should be the simple average for all subjects/semesters/years, including electives, optional subjects, additional subjects, practical subjects, and languages.
5. Graduates from 2019 and 2020 batches only are eligible to apply.
6. Candidates should not have participated in the Infosys Limited and/or Infosys Group Company (such as – Infosys BPM) selection process in the last 6 months.
7. No active backlogs are allowed.
The selection process for these roles will be conducted online in two steps: Infosys online test and virtual interview. Eligible candidates who fill the form within the deadline will undergo Infosys online test. Details of Infosys online test are:
Total test duration – 100 minutes
Section | Skill tested | No. of questions | Time allocated |
Section I | Reasoning Ability | 15 | 25 minutes |
Section II | Technical Ability | 10 | 35 minutes |
Section III | Verbal Ability | 20 | 20 minutes |
Section IV | Pseudo-code | 5 | 10 minutes |
Section V | Numerical Puzzle | 4 | 10 minutes |
Computer Networks
- ISO-OSI 7-Layer Network Architecture
- Network Architecture(Contd) and Physical Layer
- Physical Layer (Contd) - Data Encoding
- Multiplexing, Network Topology, Aloha and CSMA/CD
- CSMA/CA, Contention Free Protocols and Limited Contention Protocols
- IEEE 802.3 and Ethernet
- IEEE 802.5: Token Ring Network
- Token Ring Network(Contd...) and IEEE 802.4: Token Bus Network
- Data Link Layer(DLL)
- Network Layer
- Network Layer(cont) - Routing Algorithms Classification
- Routing Algorithms
- ARP,RARP,ICMP Protocols
- Transport Layer Protocol (TCP)
- TCP (continued)
- TCP - Implementation Issues
- Unix Socket Programming - Part 1
- Unix Socket Programming - Part 2
- Unix Socket Programming - Part 3
- Unix Socket Programming - Part 4 and Some Topics in TCP
- TCP Congestion Control, Random Losses, PAWS
- UDP and DNS
- DNS(Continued), BOOTP, DHCP
- Routing in Internet
- Routing(Continued)- Algortihms
- Remote Procedure Call
- Remote Procedure Call - Using rpcgen(Contd..)
- Distributed Applications
- Applications- FTP and EMAIL
- PEM and SNMP
- Firewalls
- Wireless Networks
- Network Security
- Network Security(Contd...)
- Network Security(Contd...)
- Kerberos and Public Key Authentication
- NFS and AFS
Operating Systems Lecture Notes
- Lecture 1: Overview and History
- Lecture 2: Processes and Threads
- Lecture 3: Thread Creation, Manipulation and Synchronization
- Lecture 4: Deadlock
- Lecture 5: Implementing Synchronization Operations
- Lecture 6: CPU Scheduling Lecture 7: OS Potpourri
- Lecture 8: Introduction to Memory Management
- Lecture 9: Introduction to Paging
- Lecture 10: Issues in Paging and Virtual Memory
- Lecture 11: MIPS TLB Structure
- Lecture 12: Introduction to File Systems
- Lecture 13: File System Implementation
- Lecture 14: Monitors
- Lecture 15: Segments
- Lecture 16: Disk Scheduling
- Lecture 17: Networking
- Lecture 18: UDP and TCP
- All Lectures link below:-
Study of different types of network cables :-
Coaxial Cables
Invented in the 1880s, "coax" was best known as the kind of cable that connected television sets to home antennas. Coaxial cable is also a standard for 10 MbpsEthernet cables. When 10 Mbps Ethernet was most popular, during the 1980s and early 1990s, networks typically utilized one of two kinds of coax cable - thinnet(10BASE2 standard) or thicknet (10BASE5). These cables consist of an inner copper wire of varying thickness surrounded by insulation and another shielding. Their stiffness caused network administrators difficulty in installing and maintaining thinnet and thicknet.
Twisted Pair Cables
Twisted pair eventually emerged during the 1990s as the leading cabling standard for Ethernet, starting with 10 Mbps (10BASE-T, also known as Category 3 or Cat3), later followed by improved versions for 100 Mbps (100BASE-TX, Cat5, and Cat5e) and successively higher speeds up to 10 Gbps (10GBASE-T). Ethernet twisted pair cables contain up to eight (8) wires wound together in pairs to minimize electromagnetic interference.
Two primary types of twisted pair cable industry standards have been defined: Unshielded Twisted Pair (UTP) and Shielded Twisted Pair (STP). Modern Ethernet cables use UTP wiring due to its lower cost, while STP cabling can be found in some other types of networks such as Fiber Distributed Data Interface (FDDI).
Fiber Optics
Instead of insulated metal wires transmitting electrical signals, fiber optic network cables work using strands of glass and pulses of light. These network cables are bendable despite being made of glass. They have proven especially useful in wide area network (WAN) installations where long distance underground or outdoor cable runs are required and also in office buildings where a high volume of communication traffic is common.
Two primary types of fiber optic cable industry standards are defined – single-mode(100BaseBX standard) and multimode (100BaseSX standard). Long-distance telecommunications networks more commonly use single-mode for its relatively higher bandwidth capacity, while local networks typically use multimode instead due to its lower cost.
USB Cables
Most Universal Serial Bus (USB) cables connect a computer with a peripheral device (keyboard or mouse) rather than to another computer. However, special network adapters (sometimes called dongles) also allow connecting an Ethernet cable to a USB port indirectly. USB cables feature twisted pair wiring.
Serial and Parallel Cables
Because many PCs in the 1980s and early 1990s lacked Ethernet capability, and USB had not been developed yet, serial and parallel interfaces (now obsolete on modern computers) were sometimes used for PC-to-PC networking. So-called null model cables, for example, connected the serial ports of two PCs enabling data transfers at speeds between 0.115 and 0.45 Mbps.
Study about the Network IP :-
All computer within an IP network must have an IP address that uniquely identifies that individual host. An Internet Protocol-based network (an IP Network) is a group of hosts that share a common physical connection and that use Internet Protocol for network layer communication. The IP addresses in an IP network are contiguous, that is, one address follows right after the other with no gaps.
Address Types in an IP Network:-
Within a given range of IP addresses used in every IP network are special addresses reserved for
In addition, a IP network has a subnet mask. The subnet mask is a value stored one each computerthat allows that computer to identify which IP addresses are within the network to which they are attached, and which IP addresses are on an outside network.
Host address:-
:-A host's IP address is the address of a specific host on an IP network. All hosts on a network must have a unique IP address. This IP address is usually not the first or the last IP address in the range of network IP addresses as the first IP address and last IP address in the range of IP addresses are reserved for special functions. The host addresses are all the addresses in the IP network range of IP addresses except the first and last IP addresses. Host IP addresses allow network hostst to establish one-to-one direct communication. This one-to-one communication is referred to as unicastcommunication.
NOTE:-All host IP addresses can be split into two parts: a network part and a host part.
Network Address
The network address is the first IP address in the range of IP addresses. To be more precise, the network address is the address in which all binary bits in the host portion of the IP address are set to zero. The purpose of the Network Address is to allow hosts that provide special network services to communicate. In practice, the network address is rarely used for communication.
Broadcast Address
The broadcast IP address is the last IP address in the range of IP addresses. To be more precise, the broadcast address is the IP address in which all binary bits in the host portion of the IP address are set to one. The broadcast address is reserved and allows a single host to make an announcement to all hosts on the network. This is called broadcast communication and the last address in a network is used for broadcasting to all hosts because it is the address where the host portion is all ones. This special address also sometimes called the all hosts address.
