Q) What is EGP (Exterior Gateway Protocol)?Īns) It is the protocol the routers in neighboring autonomous systems use to identify the set of networks that can be reached within or via each autonomous system.
This is newer than EGP (Exterior Gateway Protocol).Īns) It is a collection of routers under the control of a single administrative authority and that uses a common Interior Gateway Protocol. BGP enables this information to be shared with the autonomous system. Q) What is BGP (Border Gateway Protocol)?Īns) It is a protocol used to advertise the set of networks that can be reached with in an autonomous system. The NVT is used in the start of a Telnet session.Īns) It is a protocol formerly used to exchange routing information between Internet core routers. Q) What is NVT (Network Virtual Terminal)?Īns) It is a set of rules defining a very simple virtual terminal interaction. Kerberos uses encryption to prevent intruders from discovering passwords and gaining unauthorized access to files.Īns) It is a host that has a multiple network interfaces and that requires multiple IP addresses is called as a Multihomed Host. This will be done when the originating host believes that a destination is local, when in fact is lies beyond router.Īns) It is an Internet routing protocol that scales well, can route traffic along multiple paths, and uses knowledge of an Internet’s topology to make accurate routing decisions.Īns) It is an authentication service developed at the Massachusetts Institute of Technology.
It is a simple protocol used for transmission of IP datagrams across a serial line.Īns) It is using a router to answer ARP requests. Q) What is SLIP (Serial Line Interface Protocol)? Q) What is RIP (Routing Information Protocol)?Īns) It is a simple protocol used to exchange information between the routers. A source route may optionally be included in an IP datagram header. Usually a dynamic table causes the fewest problems for a network administrator, although the table’s contents can change without the administrator being aware of the change.Īns) It is a sequence of IP addresses identifying the route a datagram must follow.
The fixed central table reduces the need to update each machine’s table, as with the fixed table.
Q) What are the three type of routing tables and What are the advantages and disadvantages of these?Īns) The three types of routing tables are fixed, dynamic, and fixed central.Ī fixed table must be manually modified every time there is a change.Ī dynamic table changes its information based on network traffic, reducing the amount of manual maintenance.Ī fixed central table lets a manager modify only one table, which is then read by other devices.
It is an alternative to the Routing Information Protocol. Q) What is the difference between interior and exterior neighbor gateways?Īns) Interior gateways connect LANs of one organization, whereas exterior gateways connect the organization to the outside world.Īns) The HELLO protocol uses time instead of distance to determine optimal routing. Of course, transmission reliability suffers with UDP. It is a better choice than TCP because of the improved speed a connectionless protocol offers. Q) What protocol is used by DNS name servers?Īns) DNS uses UDP for communication between servers. Resource records are maintained as ASCII files. There are several types of resource records used, including name-to-address resolution information. If the boot image location is not specified, the workstation sends another UDP message to query the server.Īns) resource record is an entry in a name server’s database. The same message might contain the name of the machine that has the boot files on it. How does it get a message to the network looking for its IP address and the location of its operating system boot files?Īns) BOOTP sends a UDP message with a subnet work broadcast address and waits for a reply from a server that gives it the IP address. Q) BOOTP helps a diskless workstation boot.