mod 7
True or False
The two functions performed at the LLC sublayer of the OSI Data Link Layer to facilitate Ethernet communication are:
adds Ethernet control information to network protocol data
places information in the Ethernet frame that identifies which network layer protocol is being encapsulated by the frame
what is True
7.1 Ethernet Frames
Which term describes a field in the IPv4 packet header that contains a unicast, multicast, or broadcast address?
a. destination IPv4 address
b. protocol
c. TTL
what is
a. destination IPv4 address
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ITN
8.2 IPv4 Packet
Which destination address is used in an ARP request frame?
a. 0.0.0.0
b. 255.255.255.255
c. FFFF.FFFF.FFFF
what is
c. FFFF.FFFF.FFFF
The purpose of an ARP request is to find the MAC address of the destination host on an Ethernet LAN. The ARP process sends a Layer 2 broadcast to all devices on the Ethernet LAN. The frame contains the IP address of the destination and the broadcast MAC address, FFFF.FFFF.FFFF. The host with the IP address that matches the IP address in the ARP request will reply with a unicast frame that includes the MAC address of the host. Thus the original sending host will obtain the destination IP and MAC address pair to continue the encapsulation process for data transmission.
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9.2 ARP
A router boots and enters setup mode. What is the reason for this?
a. The IOS image is corrupt.
b. Cisco IOS is missing from flash memory.
c. The configuration file is missing from NVRAM.
what is
c. The configuration file is missing from NVRAM.
If a router cannot locate the startup-config file in NVRAM, it will enter setup mode to allow the configuration to be entered from the console device.
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ITN
10.1 Configure Initial Router Settings
What type of address is 198.133.219.162?
a. public
b. link-local
c. loopback
what is
a. public
11.3 Types of IPv4 Addresses
Which two issues can cause both runts and giants in Ethernet networks? (Choose two.)
a. a malfunctioning NIC
b. CRC errors
c. electrical interference on serial interfaces
d. half-duplex operations
what is
a. a malfunctioning NIC
d. half-duplex operations
If the default gateway is configured incorrectly on the host, what is the impact on communications?
a. The host is unable to communicate on the local network.
b. The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
what is
b. The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
A default gateway is only required to communicate with devices on another network. The absence of a default gateway does not affect connectivity between devices on the same local network.
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8.4 How a Host Routes
What two protocols are used to determine the MAC address of a known destination device IP address (IPv4 and IPv6)?
a. ARP
b. Neighbor Discovery
c. DNS
what is
a. ARP
b. neighbor discovery
Address Resolution Protocol (ARP) is used to determine the device MAC address of a known destination device IPv4 address. Neighbor Discovery (ND) is used to determine the MAC address of a known destination device IPv6 address.
A router boots and enters setup mode. What is the reason for this?
a. The IOS image is corrupt
b. The configuration file is missing from NVRAM
what is
b. The configuration file is missing from NVRAM
Given network 172.18.109.0, which subnet mask would be used if 6 host bits were available?
a. 255.255.255.192
b. 255.255.255.252
c. 255.255.224.0
what is
a. 255.255.255.192
With an IPv4 network, the subnet mask is determined by the hosts bits that are required:
11 host bits required - 255.255.248.0
10 host bits required - 255.255.252.0
9 host bits required - 255.255.254.0
8 host bits required - 255.255.255.0
7 host bits required - 255.255.255.128
6 host bits required - 255.255.255.192
5 host bits required - 255.255.255.224
4 host bits required - 255.255.255.240
3 host bits required - 255.255.255.248
2 host bits required - 255.255.255.252
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ITN
11.5 Subnet an IPv4 Network