What tcpdump command can be used to filter out all traffic except ssh traffic?

QUESTION 45

1. What is NOT one of the three characteristics of TCP in its role
   as a reliable delivery protocol?

   	a.	Sequencing and checksums
   	b.	Flow Control
   	c.	Framing
   	d.	Connection-oriented Protocol

1.25 points   

QUESTION 46

1. What is by far the most popular DNS server software
   available?

   	a.	Dnsmasq
   	b.	Microsoft DNS
   	c.	BIND
   	d.	Oracle Resolver

1.25 points   

QUESTION 47

1. What is routing protocol convergence time defined as?

   	a.	It is the time it takes for the protocol to recognize that a change has occurred.
   	b.	It is the amount of time it takes after initial configuration of the protocol for all routes to become known.
   	c.	It is the time it takes for the protocol to recognize the best path in the event of a network change.
   	d.	It is the amount of time involved in configuration of the routing protocol.

1.25 points   

QUESTION 48

1. What is the ARPA domain suffix utilized for?

   	a.	It is used to announce records for other TLDs such as .com and .net.
   	b.	It is a specialized government restricted TLD.
   	c.	It is used for reverse DNS queries, and holds PTR records.
   	d.	It is a private TLD used for synchronization of zones between servers.

1.25 points   

QUESTION 49

1. What is the purpose of the checksum TCP field?

   	a.	It specifies special options, such as the maximum segment size a network can handle.
   	b.	It identifies the data segment's position in the stream of data segments being sent.
   	c.	It allows the receiving node to determine whether the TCP segment became corrupted during transmission.
   	d.	It confirms receipt of data via a return message to the sender.

1.25 points   

QUESTION 50

1. What occurs when a collision happens on a network?

   	a.	The collision will create an error in the network switch, but otherwise, no issues will occur as a result.
   	b.	The collision goes undetected, and data transmission continues.
   	c.	Each node on the network waits a random amount of time and then resends the transmission.
   	d.	Each node on the network stops transmitting, until manually told to reconnect and transmit.

1.25 points   

QUESTION 51

1. What part of a MAC address serves as the extension identifier,
   or device ID?

   	a.	The last 12 bits of the MAC address.
   	b.	The first 12 bits of the MAC address.
   	c.	The first 24 bits of the MAC address.
   	d.	The last 24 bits of the MAC address.

1.25 points   

QUESTION 52

1. What routing metric affects a path's potential performance due
   to delay?

   	a.	latency
   	b.	theoretical bandwidth
   	c.	MTU
   	d.	load

1.25 points   

QUESTION 53

1. What statement regarding the Server Message Block protocol is
   accurate?

   	a.	It is a protocol used for accessing network-based LDAP directories.
   	b.	It is used by Windows and UNIX-based operating systems to share files.
   	c.	It is a simple protocol used to synchronize block messages written to iSCSI drives on a network.
   	d.	It is a signaling protocol used to make a connection between hosts prior to data transfer.

1.25 points   

QUESTION 54

1. What statement regarding the differences between the Windows
   tracert utility and the Linux/UNIX/macOS traceroute utility is
   accurate?

   	a.	By default, the tracert utility uses ICMP echo requests, while traceroute uses UDP datagrams or TCP SYN messages.
   	b.	The Windows tracert utility does not place limits on the TTL of repeated trial messages.
   	c.	The tracert utility expects an ICMP port unreachable error message as the final reply to a trace.
   	d.	Only tracert can send UDP messages for tracing a path.

1.25 points   

QUESTION 55

1. What tcpdump command can be used to filter out all traffic
   except SSH traffic?

   	a.	tcpdump port 22
   	b.	tcpdump -f +ssh
   	c.	tcpdump -p 22
   	d.	tcpdump only ssh

1.25 points   

QUESTION 56

1. What text editor can be used on Linux to view and edit the
   contents of a configuration file?

   	a.	Microsoft Word
   	b.	vim
   	c.	edit
   	d.	Notepad

1.25 points   

QUESTION 57

1. What type of IPv6 address is fe80::8cf1:2c42:ffde:da1c?

   	a.	anycast address
   	b.	global address
   	c.	multicast address
   	d.	link local address

1.25 points   

QUESTION 58

1. What utility is the equivalent to the pathping command on a
   Linux system?

   	a.	mtr
   	b.	tracepath
   	c.	traceroute
   	d.	hping

1.25 points   

QUESTION 59

1. What utility is used to verify that TCP/IP installed, bound to
   the NIC, configured correctly, and communicating with the
   network?

   	a.	ping
   	b.	ifconfig
   	c.	traceroute
   	d.	route

1.25 points   

QUESTION 60

1. When using DHCP for IPv6 (i.e. DHCPv6), what port do clients
   receive responses on?

   	a.	port 68
   	b.	port 546
   	c.	port 67
   	d.	port 547