CCNA V7.0 CH 1–7 MIDTERM COMPREHENSIVE
EXAM REVIEW WITH SOLUTIONS 2026
◉ 48. What will happen if the default gateway address is incorrectly
configured on a host?
- The host cannot communicate with other hosts in the local
network.
- The host cannot communicate with hosts in other networks.
- A ping from the host to 127.0.0.1 would not be successful.
- The host will have to use ARP to determine the correct address of
the default gateway.
- The switch will not forward packets initiated by the host.. Answer:
- The host cannot communicate with hosts in other networks.
◉ 49. What are two features of ARP? (Choose two.)
- When a host is encapsulating a packet into a frame, it refers to the
MAC address table to determine the mapping of IP addresses to MAC
addresses.
- An ARP request is sent to all devices on the Ethernet LAN and
contains the IP address of the destination host and its multicast MAC
address.
- If a host is ready to send a packet to a local destination device and
it has the IP address but not the MAC address of the destination, it
generates an ARP broadcast.
,- If no device responds to the ARP request, then the originating node
will broadcast the data packet to all devices on the network
segment.
- If a device receiving an ARP request has the destination IPv4
address, it responds with an ARP reply.. Answer: - If a host is ready
to send a packet to a local destination device and it has the IP
address but not the MAC address of the destination, it generates an
ARP broadcast.
- If a device receiving an ARP request has the destination IPv4
address, it responds with an ARP reply.
◉ 50. A network administrator is adding a new LAN to a branch
office. The new LAN must support 90 connected devices. What is the
smallest network mask that the network administrator can use for
the new network?
- 255.255.255.128
- 255.255.255.240
- 255.255.255.248
- 255.255.255.224. Answer: - 255.255.255.128
◉ 51. What are two ICMPv6 messages that are not present in ICMP
for IPv4? (Choose two.)
- Neighbor Solicitation
- Destination Unreachable
- Host Confirmation
,- Time Exceeded
- Router Advertisement
- Route Redirection. Answer: - Neighbor Solicitation
- Router Advertisement
◉ 52. A client packet is received by a server. The packet has a
destination port number of 80. What service is the client requesting?
- DHCP
- SMTP
- DNS
- HTTP. Answer: - HTTP
◉ 53. What is an advantage for small organizations of adopting
IMAP instead of POP?
- POP only allows the client to store messages in a centralized way,
while IMAP allows distributed storage.
- Messages are kept in the mail servers until they are manually
deleted from the email client.
- When the user connects to a POP server, copies of the messages are
kept in the mail server for a short time, but IMAP keeps them for a
long time.
- IMAP sends and retrieves email, but POP only retrieves email..
Answer: - Messages are kept in the mail servers until they are
manually deleted from the email client.
, ◉ 54. A technician can ping the IP address of the web server of a
remote company but cannot successfully ping the URL address of the
same web server. Which software utility can the technician use to
diagnose the problem?
- tracert
- ipconfig
- netstat
- nslookup. Answer: - nslookup
◉ 55. Which two functions are performed at the LLC sublayer of the
OSI Data Link Layer to facilitate Ethernet communication? (Choose
two.)
- implements CSMA/CD over legacy shared half-duplex media
- enables IPv4 and IPv6 to utilize the same physical medium
- integrates Layer 2 flows between 10 Gigabit Ethernet over fiber
and 1 Gigabit Ethernet over copper
- implements a process to delimit fields within an Ethernet 2 frame
- places information in the Ethernet frame that identifies which
network layer protocol is being encapsulated by the frame. Answer: -
enables IPv4 and IPv6 to utilize the same physical medium
- places information in the Ethernet frame that identifies which
network layer protocol is being encapsulated by the frame
EXAM REVIEW WITH SOLUTIONS 2026
◉ 48. What will happen if the default gateway address is incorrectly
configured on a host?
- The host cannot communicate with other hosts in the local
network.
- The host cannot communicate with hosts in other networks.
- A ping from the host to 127.0.0.1 would not be successful.
- The host will have to use ARP to determine the correct address of
the default gateway.
- The switch will not forward packets initiated by the host.. Answer:
- The host cannot communicate with hosts in other networks.
◉ 49. What are two features of ARP? (Choose two.)
- When a host is encapsulating a packet into a frame, it refers to the
MAC address table to determine the mapping of IP addresses to MAC
addresses.
- An ARP request is sent to all devices on the Ethernet LAN and
contains the IP address of the destination host and its multicast MAC
address.
- If a host is ready to send a packet to a local destination device and
it has the IP address but not the MAC address of the destination, it
generates an ARP broadcast.
,- If no device responds to the ARP request, then the originating node
will broadcast the data packet to all devices on the network
segment.
- If a device receiving an ARP request has the destination IPv4
address, it responds with an ARP reply.. Answer: - If a host is ready
to send a packet to a local destination device and it has the IP
address but not the MAC address of the destination, it generates an
ARP broadcast.
- If a device receiving an ARP request has the destination IPv4
address, it responds with an ARP reply.
◉ 50. A network administrator is adding a new LAN to a branch
office. The new LAN must support 90 connected devices. What is the
smallest network mask that the network administrator can use for
the new network?
- 255.255.255.128
- 255.255.255.240
- 255.255.255.248
- 255.255.255.224. Answer: - 255.255.255.128
◉ 51. What are two ICMPv6 messages that are not present in ICMP
for IPv4? (Choose two.)
- Neighbor Solicitation
- Destination Unreachable
- Host Confirmation
,- Time Exceeded
- Router Advertisement
- Route Redirection. Answer: - Neighbor Solicitation
- Router Advertisement
◉ 52. A client packet is received by a server. The packet has a
destination port number of 80. What service is the client requesting?
- DHCP
- SMTP
- DNS
- HTTP. Answer: - HTTP
◉ 53. What is an advantage for small organizations of adopting
IMAP instead of POP?
- POP only allows the client to store messages in a centralized way,
while IMAP allows distributed storage.
- Messages are kept in the mail servers until they are manually
deleted from the email client.
- When the user connects to a POP server, copies of the messages are
kept in the mail server for a short time, but IMAP keeps them for a
long time.
- IMAP sends and retrieves email, but POP only retrieves email..
Answer: - Messages are kept in the mail servers until they are
manually deleted from the email client.
, ◉ 54. A technician can ping the IP address of the web server of a
remote company but cannot successfully ping the URL address of the
same web server. Which software utility can the technician use to
diagnose the problem?
- tracert
- ipconfig
- netstat
- nslookup. Answer: - nslookup
◉ 55. Which two functions are performed at the LLC sublayer of the
OSI Data Link Layer to facilitate Ethernet communication? (Choose
two.)
- implements CSMA/CD over legacy shared half-duplex media
- enables IPv4 and IPv6 to utilize the same physical medium
- integrates Layer 2 flows between 10 Gigabit Ethernet over fiber
and 1 Gigabit Ethernet over copper
- implements a process to delimit fields within an Ethernet 2 frame
- places information in the Ethernet frame that identifies which
network layer protocol is being encapsulated by the frame. Answer: -
enables IPv4 and IPv6 to utilize the same physical medium
- places information in the Ethernet frame that identifies which
network layer protocol is being encapsulated by the frame
