What is "keepalive"?
a. A keepalive is a small, layer-1 bit message that is transmitted by a network device to let directly-connected network devices know of its presence.
b. A keepalive is a small, layer-2 message that is transmitted by a network device to let directly-connected network devices know of its presence.
c. A keepalive is a small, layer-2 message that is transmitted by a network device to let it neighbors know of congestion
d. A keepalive is a small, layer-3 message that is transmitted by a network device to let directly-connected network devices know of its presence.
e. A keepalive is a small, layer-3 message that is transmitted by a network device to let it neighbors know of congestion
What will the command "dfshares" will do without any arguments?
Which layer is responsible coordinating communications b/w segments ? a. presentation b. Session c. transport d. network
It is advisable not to use telnet because of security problems. Which program should you use instead ?
Which of the follwoing are Layer2 protocols ? Choose all that apply. a. HDLC b. IP c. UDP d. SLIP e. PPP
Port numbers for the following 2 standard services: Netstat , FTP a. 25, 81 b. 21, 15 c. 23, 80 d. 15, 21 e. 15, 22
Which command lists versions and states of the nfs service running on a host called machine ?
Define ipv6?
you have internet connection but u rnot able to open ur webpages, ur system is pinging properly to dns server . so pls tell me where is problem ?
what is dhcp? what is the uses and advantages?
what is different between instalation and configuration?
Which file can a user use for private aliases ?
4 functions that ICMP protocol performs are: a. echo (ping) b. telnet c. rcp d. rlogin e. rpc f. TTL announce (used by traceroute) g. source quench message (during congestion) h. network error announcement