Networking Concepts Flashcards
Which protocol is HTTP directly encapsulated in?
TCP
UDP
ICMP
TCP
TCP is used for connection-oriented, guaranteed, acknowledged communication
hich protocol is DHCP directly encapsulated in?
TCP
UDP
ICMP
UDP
UDP is used for connectionless, unguaranteed, and unacknowledged communication
Which protocol is used for information and error reporting?
TCP
UDP
ICMP
ICMP
ICMP provides knowledge to IP with both informational and error messages
Which layer of OSI are routers found at?
1
2
3
3
Routers are found at Layer 3 of OSI
Which layer of OSI do MAC addresses belong to?
1
2
3
2
Frames at Layer 2 contain MAC addresses
TCP and UDP exist at which layer of OSI?
6
5
4
4
Layer 4 is where the sending application chooses between connection-oriented TCP and connectionless UDP
What type of routing protocol is OSPF?
Static
EGP
Link state
Link state
Open Shortest Path First is the most common IGP today. It’s a link state routing protocol, as the state of the link is constantly being monitored
What field in the Ethernet frame do switches use to learn where hosts are?
Source MAC address
Destination IP address
Destination MAC address
Source MAC address
When frames enter an interface, the switch logs the source MAC address and the interface on which it was heard
Which of the following separates the control plane from the data plane in routers and switches?
PoE
IPv6
NAT
PoE
Software defined networking uses a controller to move traffic through an internetwork
Which of these is a valid host IP address on the 10.1.0.0/16 network?
- 1.0.1
- 2.0.1
- 1.255.255
10.1.0.1
The address must start with 10.1 and all host bits can’t be all zeros or all ones
Which one of these is not a DHCP message type?
Discover
Offer
Reply
Reply
The third step is Request, not Reply
Which of these IP addresses can’t be used on the Internet?
- 167.1.1
- 168.1.1
- 169.1.1
192.168.1.1
Addresses that begin with 192.168 are private, and can’t be used on the Internet
Which of the following wired topologies is used today to connect devices of the same network together?
Ring
Mesh
Star
Star
On networks today, the switch acts as the central device in a star topology
Which of the following topologies uses a WAP?
Infrastructure
Ad hoc
Bus
Infrastructure
The infrastructure topology uses a wireless access point
What standard defines wireless networks?
- 2
- 3
- 11
802.11
The 802.11 standards define every aspect of wireless networks
Which of the following is the latest 802.11 standard used to provide LAN access?
- 11a
- 11b
- 11ac
- 11ac
802. 11ac devices are on the shelves today
SIM cards came from which technology?
GSM
TDMA
CDMA
GSM
GSM introduced the SIM card
What’s the first step to installing a wireless network?
Configure the WAP.
Conduct a site survey.
Assign IP addresses to the hosts.
Conduct a site survey.
The site survey helps determine the best location for the WAPs
Google Docs is an example of which of the following?
SaaS
PaaS
IaaS
SaaS
Software available over the Internet is Software as a Service
Which one of these is not a cloud delivery model?
Public
Hybrid
Mesh
Mesh
There is no mesh cloud delivery model
Which of the following is a use case for IaaS?
Running programs over the Internet
Web site development
A company that needs extra servers to handle a spike in traffic for holiday shopping
A company that needs extra servers to handle a spike in traffic for holiday shopping
Infrastructure as a Service provides a company an extension to their onsite data center
Which DNS record can be used for security?
SOA
PTR
TXT
TXT
The Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM) are implemented through the TXT record
Which of these DNS records is found in a reverse lookup zone?
A
MX
PTR
PTR
Pointer records resolve an IP address to its corresponding hostname
Which of the following is true regarding DHCP relay agents?
They forward broadcasts from clients.
They turn broadcasts from clients into unicasts.
They turn unicasts from clients into broadcasts.
They turn broadcasts from clients into unicasts.
DHCP relay agents take broadcasts from clients and unicast them to DHCP servers. Routers never forward broadcasts, nor do they turn unicasts into broadcasts