ACI net fundamentals all Flashcards
1
Q
How many pins are on a V.35 WAN cable interface?
A
34
2
Q
Which layer 2 devices provide wireless access to wi-fi enabled hosts on the network?
A
access points (ap)
3
Q
When default subnet masks are in use, what class of IP address is 133.6.5.4
A
Class B
4
Q
In which type of internal switching process does a frame experience latency greater than cut-through but less than store forward internal switching?
A
Fragment-free
5
Q
What are the components of an IP address?
A
network id, host id, and subnet id
6
Q
What would be the host IP address range, if the IP address given is 172.28.23.2 and the subnet mask is 255.255.255.192?
A
/26 172.28.23.1 - 172.28.23.62
7
Q
What are the four types of cloud computing, based on management type?
A
public, private, hybrid, and community
8
Q
What model of cloud computing provides on-demand, online access to an application suite without the need for local installation?
A
SaaS Software as a Service
9
Q
Which device connects the 4-wire cable of the ISP WAN and the router?
A
CSU/DSU (Channel Service Unit/Data Service Unit)
10
Q
What term describes the behavior when TCP traffic leaving an interface has been reduced to near zero while UDP traffic is steadily increasing at the same time?
A
Starvation
11
Q
On the basis of which address does a switch make forwarding decisions?
A
MAC Media Access Control address
12
Q
Which layer 2 network devices forward frames based on MAC address table which is dynamically populated as the device learns new MAC addresses?
A
Switches
13
Q
Which fields found in a TCP header are NOT found in a UDP header?
A
Sequence number, acknowledgement number, and window size
14
Q
Which wireless channels were historically reserved by the FCC for government weather radar systems?
A
Channels 52-64 (5.250 - 5.330 GHz)
15
Q
How many collision domains does a 12-port switch create?
A
12
16
Q
How many broadcast domains does a 24-port switch create with 2 VLANS having 12 port assigned to each?
A
two
17
Q
In which type of internal switching process does frame experience minimum latency?
A
cut-through
18
Q
What command enables routing on a multilayer switch?
A
switch(config)# ip routing
19
Q
What is the length of an internet protocol version 6 IPV6 address?
A
128 bits
20
Q
What command is used to renew a DHCP-obtained IP address in Windows?
A
ipconfig/renew
21
Q
What command is used to configure a static entry in the IPv6 neighbor discovery cache that will enhance the neighbor discovery process that occurs with IPv6?
A
ipv6 neighbor
22
Q
What IP address concept was developed to conserve the public addressing space?
A
Private IP addressing
23
Q
Which Cisco Internetwork Operating System (IOS) command is used to view the IPv6 routing table?
A
show ipv6 route
24
Q
What are the only types of IP addresses registered with ethe Internetwork Information Center (InterNIC)?
A
public
25
Which OSI Layer 2 devices provide hardware-based switching of LAN traffic?
LAN Switches
26
What are the three approaches for troubleshooting network problems using the OSI model?
Bottom up, top down, and divide and conquer
27
What would be the host IP range, if the IP address given is 192.168.2.1 and the mask bit is 29?
192.168.2.1 to 192.168.2.6 /29 is .248
28
What command is used to configure a network interface card (NIC) in Linux?
ifconfig
29
Which CISCO Internetwork Operating System (IOS) command is used to view the information specific to the interface hardware?
show controllers serial
30
What is meant by the term measured service in cloud computing?
the process of tracking resource utilization by the customer for the purpose of charging for those resources
31
What is resource pooling in virtual computing?
a feature whereby collections of resources (CPU and memory) are stored in containers called pools, which are then shared by virtual machines
32
At what layer of the OSI model are RF waves?
one
33
What would be the transmission mode if two Cisco devices have their NIC speed configured to AUTO mode?
full duplex
34
What is the main difference between virtualization and cloud computing?
the location and ownership of the physical components
35
What should be the default gateway for a host that needs to access a server on a network across the local router?
IP address of the local interface of the router
36
How many pins are on the EIA/TI-530 WAN cable interface?
25
37
What would be the broadcast address if the IP address given is 172.28.232 and the subnet mask is 255.255.240.0
/20 172.28.31.255
38
From which two devices can a router receive clocking on a serial cable?
Modem or CSU/DSU
39
What are the three actions performed by transparent bridges?
Learn MAAAAAAAC address by examining the source address of each frame, decide whether to forward the frame or filter it out, and to create a loop-free environment by using STP
40
What is the purposed of virtual desktops?
It will allow you to implement a uniform user environment
41
What type of communication occurs when a host sends a frame to any specific host on the LAN?
Unicast
42
What command can be used to define a prefix pool when using DHCPv6?
ipv6 local pool
43
What command places a port on a multi-layer switch in layer 3 mode?
switch(config-if)# no switchport
44
What would be the broadcast address if the ip address given is 192.168.2.1 and the subnet mask is 255.255.255.192
/26 192.168.2.63
45
Which CISCO IOS show command will generate the output "Serial0 is administratively down, line protocol is down"?
show interfaces
46
What software allows a virtual machine to exist in virtual computing?
the hypervisor
47
Which cable is used on a router's wide area network (WAN) interface to connect to the serial ports?
serial cable
48
Which OSI later 3 devices are used to segregate a network into separate broadcast domains?
routers
49
What are the three common service models of cloud computing?
Software as a Service, platform as a Service, and Infrastructure as a Service
50
How does a standalone switch treat a broadcast frame?
The switch will forward the packet to all ports except the port on which it was received
51
What antenna type radiates in a 360-degree pattern in the horizontal plane
Omnidirectional
52
What IPv6 command is used to define a static host name-to-address mapping in the host name cache?
ipv6host
53
Which term defines a LAN segment where broadcast from one NIC can be received by all other NICs on the segment?
broadcast domain
54
What type of IPv6 address has a prefix of FEC0::/10?
site-local
55
What is the range of private address for class C ip address?
192.168.0.0 to 192.168.255.255
56
In which mode is the IPv6 host command executed?
Global config mode
57
How many broadcast domains does a 24-port switch, without VLAN configured, have?
one
58
What is the range of private address for class B IP addresses?
172.16.0.0 to 172.16.31.255.255
59
What is the WLAN name called?
SSID
60
Which OSI layer 2 devices provide software-based switching of LAN traffic?
LAN bridges
61
What would be the subnet ID if the IP address is 172.168.23.2, the maximum number of hosts per subnet is 254, and the maximum number of subnets possible is 256?
172.28.23.0 /24
62
What model of cloud computing provides computer and server infrastructure, typically through virtualization environment?
IaaS
63
How many pins are on an ETIA/TIA-449 WAN Cable interface?
37
64
What type of interface has an entry for multiple next hops?
Multipoint interface
65
What is the broadcast MAC address for ethernet as defined by IEEE?
FFFF.FFFF.FFFF
66
What would be the subnet mask if the IP address is 172.168.23.2, the maximum number of hosts per subnet is 254, and the maximum number of subnets possible is 256?
/24 255.255.255.0
67
Which cable type is the copper-wire LAN cabling standard defined by the TIA?
UTP
68
What type of ports on a multi-layer switch have an assigned IP address and subnet mask?
routed ports
69
How many pins are on an x.21 WAN cable interface?
15
70
What behavior causes a ping packet to take a different path in the return than it did on its way to the destination?
asymmetric routing
71
At which OSI layer do the wireless access ports operate?
2
72
What are the fur port mode LEDs available on a Cisco Catalyst switch?
stat, util, duplex, and speed
73
What type of communication occurs when a host sends a frame to all host machines in the ethernet lan segment?
broadcast
74
How many broadcast domains does a 4-port hub create?
one
75
Which type of switching process only waits to receive the first 64 bytes of the frame before forwarding it to the destination port?
Fragment-free
76
How do information security requirements for virtual servers differ from the information security requirements for physical servers?
There is no difference
77
What is the purpose of virtual PBX?
It allows you to outsource your telephony service to a service
78
How does a standalone switch treat a multicast frame?
The switch will forward the packet to all ports except the port on which it was received
79
What type of IPv6 address is used on links that connect organizations to their internet service providers ISPs?
Global unicast
80
Which system LED color indicates that a switch is operating normally?
green
81
Which OSI layer 3 parameter misconfiguration will cause a host that can communicate on local segment, to receive IP packets from a host across a router but would not be able to reply to that host?
default gateway
82
What type of communication occurs when a host sends a frame to select few host machines on the Ethernet LAN segment?
multicast
83
Which two unshielded twisted pair (UTP) cable categories support Gigabit ethernet?
UTP CAT 5 and 6
84
Which type of cable is used to connect the console port on a switch to a terminal?
a rollover console cable
85
Which TCP/IP transport layer protocol is connection-oriented?
TCP
86
What model of cloud computing provides a virtualized deployment platform, a value-added solution stack, and an application development platform?
PaaS
87
How many collision domains does a 12-port hub create?
one
88
Which security control is lost when using cloud computing?
Physical control of the data
89
What are the three types of switching processes?
Store and forward, cut-through, and fragment-free switching
90
Which field in the header of a TCP packet refers to the number of packets that can be received without an acknowledgement?
window size
91
Which term defines a LAN segment where frames of a group of NICs can collide with each other?
Collision Domain
92
Which type of switching process allows switch to perform address lookup and forward the frame as soon as the destination address field in the frame header is received?
cut-through
93
What is the name of the first Ethernet NIC in Linux Computer?
eth0
94
Where should you install security updates and anti-malware software on a virtual computer?
On both the host computer and on all virtual machines
95
Which type of Ethernet cable is used to connect the 10/100 port of the switch to the router?
a straight-through cable
96
In which layer of the Cisco three-later hierarchical mode is the emphasis on high speed?
core
97
Which Cisco IOS show command will generate the output "MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255"?
show interfaces
98
What command lists all the TCP/IP configuration parameters for the windows computer on which it is run?
ipconfig /all
99
what command is used to enable IPv6 forwarding on a router?
IPv6 unicast-routing
100
Which network device provides a common connection point for network hosts and operates at OSI layer 1?
a hub
101
Which type of Ethernet cable is used to connect 10/100 port on the switch to another switch
a crossover cable
102
What type of IPv6 addresses participate in the neighbor discovery protocol and the stateless autoconfiguration process
link local
103
Which type of switching process allows switch to verify the Frame Check Sequence (FCS) of a frame before forwards it the destination port?
store and forward
104
What type of antenna is unidirectional with a wide beam width?
patch antenna
105
What antenna type is very high-gain and has a very sharp beam in radiation?
parabolic dish
106
Which type of switching process does not allow switch to verify the FCS Frame Check Sequence in a frame before forwarding it to the destination port?
cut-through
107
How many hosts per subnet can be accommodated with IP address 172.168.23.2 ad subnet mask of 255.255.240.0?
4094
108
Which TCP/IP transport layer protocol has very little overhead?
UDP
109
Which protocol enables hosts on a LAN segment to determine the MAC address of hosts with Known IP address?
ARP address resolution protocol
110
What would be the destination MAC address for a host sending a packet to another host across a router?
the mac address of the router
111
Which network devices operate at layer 1 and provide multiple ports to connect many hosts on the network?
Hub
112
What does an amber system LED on a Cisco Catalysts switch represent?
POST Power On Self Test Failure
113
How does a standalone switch treat a Unicast frame for which is could not find any mapping in the switch MAC table?
the switch will forward the frame to all ports except the port on which it was received
114
What command enables inter-VLAN routing on as switch?
the ip routing command
115
What type of IPv6 address has the prefix FE80::/10?
link-local
116
How many pins are on an EIA?TIA-232 WAN cable interface?
25
117
What is the maximum number of subnets that will be created with IP address 192.168.2.1 and a subnet mask of 255.255.255.240
16
118
From which end of a serial cable does a router receive a clock rate from a CSU/DSU or modem?
the Data Communication Equipment (DCE) end
119
Which MS-DOS command will enable you to verify the default gateway configuration of a host that is unable to communicate with hosts across a local Cisco router?
the ipconfig command
120
What three OSI layer parameters required to be configured on a host to communicate with hosts across the router
IP address, subnet mask, and the default gateway
121
What is the purpose of virtual switches
It will allow you to host services on different broadcast domains on the same physical switch
122
What type of device is required to host three LAAN subnets and a T1 internet connection?
router
123
What is the range of a class A private IP addresses?
10.0.0.0 to 10.255.255.255
124
What type of IPv6 address falls in the range 2000::/3 to E000::/3?
global unicast
125
What service can be used to convert private IP addresses to public IP addresses and vice versa?
NAT Network Address Translation
126
Which type of switching process requires switch to wait until the entire frame is received before forwarding it to the destination port?
store and forward
127
Which TCP/IP transport layer protocol is connectionless?
UDP
128
Which internal switching process works on the premise that collisions are detected within the first 64 bytes of a frame?
Fragment-Free
129
In which type of internal switching process does a frame experience maximum latency?
store and forward
