Pop Quiz Flashcards
Which layers of the OSI reference model contains the MAC and LLC sublayers
A. Network layer
B. Transport layer
C. Physical layer
D. Data link layer
D
Divided into sub layers
Which approach to bandwidth usage consumes all the available frequencies on a medium to transmit data
A. Broadband
B. Baseband
C. Time-division multiplexing
D. Simplex
B
Windowing is provided at what layer of the OSI reference model
A. Data link layer
B. Network layer
C. Transport layer
D. This physical layer
C
IP addressing reside at which layer of the OSI reference model
A. Network layer
B. Session layer
C. Data link layer
D. Transport layer
A
Which of the following is a connection less transport layer protocol
A. IP
B. TCP
C. UDP
D. SIP
C
What setting ultimately controls the size of packets that are moving though the modern network
A. TTL
B. MTU
C. SSH
D. CSMA/CD
B
What is the range of well-known TCP and UDP ports
A. Below 2048
B. Below 1024
C. 16,384-32,768
D. Above 8192
B
What port number uses HTTPS
A. 80
B. 443
C. 68
D. 23
B
What value is decremented by one of each router hop on the network
A. Count
B. Type
C. TTL
D. Dead timer
C
Windowing is a technology that applies to which transport layer protocol
A. UDP
B. FTP
C. ICMP
D. TCP
D
Windowing is a technology that applies to which transport layer protocol
A. UDP
B. FTP
C. ICMP
D. TCP
D
What happens to data as it moves from the upper layers to the lower layers of the OSI model on a host system
A. The data moves from the physical layer to the application layer
B. The data is encapsulated with a header at the beginning and a trailer at the end
C. The header and trailer are stripped off though decapsulation
D. The data is sent in groups of segments that require two acknowledgements
B
Which layer of the OSI reference model is responsible for ensuring that frames do not exceed the maximum transmission unit (MTU) of the physical media
A. Network layer
B. Transport layer
C. Physical layer
D. Data link layer
D
What DSL variant has a distance limitation of 18,000 feet between a DSL modem and its DSLAM
A. HDSL
B. ADSL
C. SDSL
D. VDSL
B
What kind of network do many cable companies use to service their cable modems with both Forbes-optic and coaxial cabling
A. Head-end
B. DOCSIS
C. Composite
D. HFC
D
Which of these components is used to make virtualisation possible in the server environment by permitting multiple systems to use the underlying hardware of the host system
A. vNIC
B. vSwitch
C. SD-WAN
D. Hypervisor
D
If you are unable to connect to the internet shat IP address will you have
APIPA IP address (169.254.X.X
What type of IP address is 192.168.0.X
Private IP address
If you DHCP scope is exhausted and you want to connect clients to the network without creating a new DHCP pool what will you do?
Reduce the lease time (kicking inactive devices off the network)
Which of the following DNS records works as an alias to another record
A) AAAA
B) CNAME
C) MX
D) A
B) CNAME means to have an alias
Which of the following is used to track and document various types of known vulnerabilities
A) Least privilege
B) Zero Day
C) CVE
D) Penetration testing
What port is SSH
22
What port is Telnet
23
What port is DNS
53
