2015 Comms Test 2 - 2015 Comms Test 2 Q A 1.1What is an...

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2015 Comms Test 2 – Q & A 1.1 What is an Open secure shell? State and describe 5 functions of OPENSSH clients for remote login? [6] OpenSSH is a suite of secure network connectivity tools that replaces telnet/telnetd, rcp,rsh/rshd, rlogin and ftp. Scp – copies files to and from another system Sftp – copies files to and from other systems (a secure replacement for ftp) Ssh – runs a command on or logs in on another system Sshd – the opensshd daemon that runs on the server Ssh-keygen – creates, manages, and converts RSA or DSA host/user authentication keys. 1.2 What is Samba? State and describe the two daemons that are part of the Samba suite [4] A suite of programs that facilitate interworking between disparate opeating systems Daemons smbd The background (daemon) program offering print and file sharing for SAMBA clients nmbd NetBIOS nameserver program facilitating NetBIOS over IP (converting between NetBIOS and IP addresses 2.1 Describe the structure of a DNS message sent in response to a query? [5] Header record – information about this record Query record – repeats the query Answer records – resource records that answer the query Authority records – resource records for servers that have authority for the answers Additional records – additional resource records such as NS records.
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