A
When IPv4 addressing is manually configured on a web server, which property of the IPv4 configuration identifies the network and host portion for an IPv4 address?
a. DNS server address
b. subnet mask
c. default gateway
d. DHCP server address
b. subnet mask
What are the two functions that are provided by the network layer? (choose two)
a. carrying data between processes that are running on source and destination hosts
b. providing end devices with a unique network identifier
c. placing data on the network medium
d. directing data packets to destination hosts on other networks
e. providing dedicated end-to-en connections
b. providing end devices with a unique network identifier
d. directing data packets to destination hosts on other networks
What subnet mask would be associated with the IPv4 prefix of /28?
a. 255.255.255.0
b. 255.255.255.224
c. 255.255.255.240
d. 255.255.255.248
c. 255.255.255.240
What IPv6 header field is used to indicate the upper layer protocol or extension header that is included in the packet?
a. Next/Following Header
b. Payload Length
c. Flow Label
d. Traffic Class
a. Next/Following Header
A network engineer subnets the network 192.168.100.0/24 into 16 subnets. How many usable host addresses will be available on each subnets?
a. 6
b. 14
c. 30
d. 62
b. 14
What information does a switch use to populate the MAC address table?
a. the destination MAC address and the incoming port
b. the source and destination MAC addresses and the incoming port
c. the source MAC address and the incoming port
d. the source MAC address and the outgoing port
c. the source MAC address and the incoming port
a. 192.168.10.2
b. 193.168.10.16
c. 192.168.10.56
d. 192.168.10.74
e. 192.168.100.62
a. 192.168.10.2
c. 192.168.10.56
When would a switch record multiple entries for a single switch port in its MAC address table?
a. when a router is connected to the switch port
b. when multiple ARP broadcasts have been forwarded
c. when another switch is connected to the switch port
d. when the switch is configured for Layer 3 switching
c. when another switch is connected to the switch port
What information is added during the encapsulation at OSI Layer 3?
a. source and destination MAC
b. source and destination application protocol
c. source and destination port number
d. source and destination IP address
d. source and destination IP address
What do devices on the same IPv4 subnet have in common?
a. They all use the same default gateway.
b. They all have a subnet mask of /8, /16, or /24.
c. They all have the same last octet in their IPv4 addresses.
d. They all have have the same number in the first three octets of their IPv4 address.
a. They all use the same default gateway.
How does the network layer use the MTU (Max Transmission Unit) value?
a. The network layer depends on the higher level layers to determine the MTU.
b. The network layer depends on the data link layer to set the MTU, and adjust the speed of transmission to accommodate it.
c. The MTU is passed to the network layer by the data link layer.
d. To increase speed of delivery, the network layer ignores the MTU.
c. The MTU is passed to the network layer by the data link layer.
What is one advantage that the IPv6 simplified header offers over IPv4?
a. smaller-sized header
b. little requirement for processing checksums
c. smaller-sized source and destination IP addresses
d. efficient packet handling
d. efficient packet handling
Why does a Layer 3 device perform ANDing process on a destination IP address and subnet mask?
a. to identify the broadcast address of the destination network
b. to identify the host address of the destination host
c. to identify the faulty frames
d. to identify the network address of the destination network
d. to identify the network address of the destination network
Which field in an IPv6 packet is used by the router to determine if a packet has expired and should be dropped?
a. TTL
b. Hop Limit
c. Address Unreachable
d. No Route to Destination
b. Hop Limit
What is correct in relation to NAT for IPv6?
a. It is used to convert private IPv6 addresses to public IPv6 addresses.
b. It is a temporary mechanism to assist in the migration from IPv4 to IPv6.
c. NAT64 has been deprecated by IETF in favor of NAT-PT.
d. Dual stack is an example of implementation of NAT for IPv6.
b. It is a temporary mechanism to assist in the migration from IPv4 to IPv6.
In Layer 2, this field (4 bytes) is used to detect errors in a frame.
a. Preamble
b. FCS
c. CRC
d. Type/Length
b. FCS
What IPv4 header field is responsible for defining the priority of the packet?
a. flow label
b. flags
c. differentiated services
d. traffic class
c. differentiated services
a. 64 bytes
b. 128 bytes
c. 1024 bytes
d. 1518 bytes
d. 1518 bytes