Cisco CCNA questions. Question 31 Switching tables contain source MAC and the co
ID: 3557222 • Letter: C
Question
Cisco CCNA questions.
Question 31
Switching tables contain source MAC and the corresponding switch port
True
False
1 points
Question 32
You can obtain an IP address for a switch using DHCP.
True
False
1 points
Question 33
ATM is considered a packet swithcing service
True
False
1 points
Question 34
SMTP uses UDP
True
False
1 points
Question 35
SSID is an identifier for a wireless network.
True
False
1 points
Question 36
Enterprise switches are capable of forwarding ___________ of Ethernet frames per second.
tens of thousands
thousands
millions
hundreds of thousands
1 points
Question 37
A trunk connection between two switches located in two different rooms in the same building (select the best response):
must be fiber optic
must be crossover Ethernet cables
need to be connected via an ISP and CSU/DSU
none of the above
1 points
Question 38
When configuring a switch from the factory you must:
All are correct
assign an IP address and a subnet mask
Configure the VLAN 1 interface
issue a no shutdown command because the interface is disabled
A, B correct
define a default gateway for the switch
1 points
Question 39
Being cheap and using an Ethernet cable that is too long can result in:
late counter increase
none of the above
jabber
collisions
1 points
Question 40
Select the correct response regarding subnets;
subnets must be connected by routers
two different subnets must be attached to the same switch
a subnet cannot be a private address range
none are true
1 points
Question 41
Regarding IPv4, select the incorrect response
IP packets can be fragmented
IP packets cannot exceed 64K in length
all are correct
IP packets can be directed not to fragment
1 points
Question 42
Select the incorrect statement regarding TCP:
all are correct
can multiplex using ports
is a connectionless transport scheme
assures reliability
1 points
Question 43
An unauthorized AP in the workplace is referred to as:
none of the above
SWAN device
a rogue AP
war driving
1 points
Question 44
If a switch receives an incoming frame with unknown MAC address, it (select correct answer)
switches the frame on all interfaces except the incoming interface
none of the above
ignores the frame
switches the frame on all interfaces
1 points
Question 45
From a PCs perspective, routing is based on (select the most appropriate):
The network mask
the ARP table entry
the gateways IP address
The destination IP address
1 points
Question 46
To find another PC on the same network, which is used (select the most appropriate)
DNS
ARP table
all of the above
gateway address
1 points
Question 47
Select the correct response regarding the privileged EXEC mode:
enable secret actual-password stores the password in clear text
enable password actual-password will require a password to get to privileged mode
none are correct
if enable password and enable secret are used, both passwords are usable to get to privileged mode
1 points
Question 48
192.168.0.0/26 allows for __________ hosts in the subnet
30
64
62
32
1 points
Question 49
VoIP uses:
proprietary Layer 4 protocol
TCP for catching packet errors
UDP (no error correction)
UDP (application catches errors)
1 points
Question 50
Jabber is defined as:
Late arrivals of frames
sending non-stop frames without breaks between frames
A problem with the Wocky protocol
excessive collisions
1 points
Question 51
SYN requests are:
None are true
the way to let another TCP/IP app know its trying to be reached
a way of attacking a host
C and D are true
A , B and C are true
a way to synchronize sequence numbers
should be blocked
1 points
Question 52
Hitting the MODE button on a switch allows you to determine a port(s):
all of the above
status
full or half duplex status
speed of the port
1 points
Question 53
Switch methods include all, except for:
Fragment free
Cut through
Store and forward
all are methods
1 points
Question 54
Regarding a transparent bridge, select the incorrect statement:
destination mac is used to decide on whether to forward a frame
STP is used to create a loop free environment
all are correct
they learn mac addresses by examining the destination mac of each frame received
1 points
Question 55
Select the correct response regarding what makes up a socket
mac address, IP address and port number
a port number and an IP address
port, IP address and protocol
Port number and a protocol
1 points
Question 56
Regarding SSID cloaking, which is correct?
client associates with the closest AP
clients listen for beacons on ALL channels
all are correct
Beaconing can hide the SSID
1 points
Question 57
Select the correct statement regarding Sliding Windows
a window field in the TCP header dictates how many unacknowledged bytes can be in the connection at any time
IP cannot transport any protocol which uses Sliding Windows
UDP controls window sizes by using the Window field
window sizes are fixed
1 points
Question 58
Select the incorrect statement(s)
A T1 can combine 24 DS0s
A T3 line is equivalent to 24 T1 lines
T1 lines are 1.544 Mbps
Voice calls require at least 64Kbps
1 points
Question 59
From the telco/providers perspective, which of the following devices are considered CPE?
enterprise switch
none
ernterprise router
WAN switch
1 points
Question 60
Reasons for using VLANs or the effect of using VLANs include (select all correct responses):
reduce overhead by decreasing broadcast domain sizes
makes it difficult to group users or departments
security can possibly be increased
segregate IP traffic by classification (VoIP vs data)
STP workload is increased
a.tens of thousands
b.thousands
c.millions
d.hundreds of thousands
Explanation / Answer
31. True
32. True
33. True
34. False(It uses TCP port no 25)
35. True (Used for naming wireless networks)
36. millions (72 million packets)
37. must be fiber optic
38. assign an IP address and a subnet mask
39. late counter increase
40. subnets must be connected by routers
41. IP packets can be directed not to fragment
42. is a connectionless transport scheme
43. none of the above
44. switches the frame on all interfaces
45. the gateway